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  <xsd:import namespace="http://xbrl.sec.gov/cyd-af-sub/2024" schemaLocation="https://xbrl.sec.gov/cyd/2024/cyd-af-sub-2024.xsd" />
  <xsd:element name="LegacyOneClassMember" id="gpff_LegacyOneClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LegacyTwoClassMember" id="gpff_LegacyTwoClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GlobalOneClassMember" id="gpff_GlobalOneClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GlobalTwoClassMember" id="gpff_GlobalTwoClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFinancialHighlightsPartnershipActivityLineItems" id="gpff_ScheduleOfFinancialHighlightsPartnershipActivityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetAssetValuePerUnitRollForward" id="gpff_NetAssetValuePerUnitRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_ScheduleOfFinancialHighlightsPartnershipActivityTableTextBlock" name="ScheduleOfFinancialHighlightsPartnershipActivityTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_TotalEquityInBrokersTradingAccounts" name="TotalEquityInBrokersTradingAccounts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="gpff_FeePayableToGeneralPartner" name="FeePayableToGeneralPartner" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element name="OrganizationAndOfferingCostsPayable" id="gpff_OrganizationAndOfferingCostsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="RedemptionsPayable" id="gpff_RedemptionsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OpenLongContractsMember" id="gpff_OpenLongContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OpenShortContractsMember" id="gpff_OpenShortContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OpenContractsMember" id="gpff_OpenContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SecuritiesMember" id="gpff_SecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FuturesContractsMember" id="gpff_FuturesContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FederalFarmCreditBankMember" id="gpff_FederalFarmCreditBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="USFuturesPositionsMember" id="gpff_USFuturesPositionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignFuturesPositionsMember" id="gpff_ForeignFuturesPositionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="USGovernmentSponsoredEnterprisesMember" id="gpff_USGovernmentSponsoredEnterprisesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AgriculturalsMember" id="gpff_AgriculturalsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CurrenciesMember" id="gpff_CurrenciesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EnergyMember" id="gpff_EnergyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestRatesMember" id="gpff_InterestRatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MeatsMember" id="gpff_MeatsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MetalsMember" id="gpff_MetalsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SoftCommoditiesMember" id="gpff_SoftCommoditiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIndicesContractsMember" id="gpff_StockIndicesContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIndicesAndSingleStockFuturesMember" id="gpff_StockIndicesAndSingleStockFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_InvestmentOwnedUnrealizedGainLossOnOpenContractsNet" name="InvestmentOwnedUnrealizedGainLossOnOpenContractsNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="gpff_FinancialInstrumentsOwnedRateOfReturnRangeMinimum" name="FinancialInstrumentsOwnedRateOfReturnRangeMinimum" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gpff_FinancialInstrumentsOwnedRateOfReturnRangeMaximum" name="FinancialInstrumentsOwnedRateOfReturnRangeMaximum" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="gpff_FinancialInstrumentsOwnedRateOfReturn" name="FinancialInstrumentsOwnedRateOfReturn" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element name="ClassesOfInterestAbstract" id="gpff_ClassesOfInterestAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfClassesOfLimitedPartnerInterests" id="gpff_NumberOfClassesOfLimitedPartnerInterests" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FeesToGeneralPartner" name="FeesToGeneralPartner" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="gpff_IncentiveFees" name="IncentiveFees" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element name="OrganizationalAndOfferingCosts" id="gpff_OrganizationalAndOfferingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gpff_EquityInBrokersTradingAccountsAbstract" name="EquityInBrokersTradingAccountsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_NetAssetValuePerUnit" name="NetAssetValuePerUnit" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element name="CommodityTradingAdvisorsDisclosureAbstract" id="gpff_CommodityTradingAdvisorsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_CommodityTradingAdvisorsDisclosureTextBlock" name="CommodityTradingAdvisorsDisclosureTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="FinancialHighlightsDisclosureAbstract" id="gpff_FinancialHighlightsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SubscriptionsAndRedemptionsAndAllocationOfNetIncomeLossAbstract" id="gpff_SubscriptionsAndRedemptionsAndAllocationOfNetIncomeLossAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FinancialHighlightsDisclosureTextBlock" id="gpff_FinancialHighlightsDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_SubscriptionsAndRedemptionsAndAllocationOfNetIncomeLossDisclosureTextBlock" name="SubscriptionsAndRedemptionsAndAllocationOfNetIncomeLossDisclosureTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="TradingActivitiesAndRelatedRisksDisclosureAbstract" id="gpff_TradingActivitiesAndRelatedRisksDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TradingActivitiesAndRelatedRisksDisclosureTextBlock" id="gpff_TradingActivitiesAndRelatedRisksDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndemnificationsDisclosureAbstract" id="gpff_IndemnificationsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndemnificationsDisclosureTextBlock" id="gpff_IndemnificationsDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RedemptionsPayablePolicyTextBlock" id="gpff_RedemptionsPayablePolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrganizationAndPublicOfferingCostsPolicyTextBlock" id="gpff_OrganizationAndPublicOfferingCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StatementOfCashFlowsPolicyTextBlock" id="gpff_StatementOfCashFlowsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommodityTradingAdvisorsTable" id="gpff_CommodityTradingAdvisorsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepositsWithBrokerDealersTable" id="gpff_DepositsWithBrokerDealersTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_CommodityTradingAdvisorsLineItems" name="CommodityTradingAdvisorsLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_AnnualPercentageOfAllocatedNetAssetsManagementFeeToCommodityTradingAdvisors" name="AnnualPercentageOfAllocatedNetAssetsManagementFeeToCommodityTradingAdvisors" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_PercentageOfNewTradingProfitsOnAllocatedNetAssetsIncentiveFeeToCommodityTradingAdvisors" name="PercentageOfNewTradingProfitsOnAllocatedNetAssetsIncentiveFeeToCommodityTradingAdvisors" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="DepositsWithBrokerDealersLineItems" id="gpff_DepositsWithBrokerDealersLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_MarginAndGoodFaithDepositsWithBrokerDealersPercentageOfNetAssetValueLowEndOfRange" name="MarginAndGoodFaithDepositsWithBrokerDealersPercentageOfNetAssetValueLowEndOfRange" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_MarginAndGoodFaithDepositsWithBrokerDealersPercentageOfNetAssetValueHighEndOfRange" name="MarginAndGoodFaithDepositsWithBrokerDealersPercentageOfNetAssetValueHighEndOfRange" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="MarginToEquityRatio" id="gpff_MarginToEquityRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DerivativeAverageNumberOfInstrumentsTraded" id="gpff_DerivativeAverageNumberOfInstrumentsTraded" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalRedemptionTable" id="gpff_PartnersCapitalRedemptionTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalRedemptionLineItems" id="gpff_PartnersCapitalRedemptionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_PriorWrittenNoticePeriodByGeneralPartnerToRedeemUnits" name="PriorWrittenNoticePeriodByGeneralPartnerToRedeemUnits" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_PriorWrittenNoticePeriodByLimitedPartnerToRedeemUnits" name="PriorWrittenNoticePeriodByLimitedPartnerToRedeemUnits" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" id="gpff_ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceByContractTableTextBlock" id="gpff_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceByContractTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumOwnershipPercentageOfTotalCapitalContributionsOfAllPartnersToPartnershipOptionOne" id="gpff_MinimumOwnershipPercentageOfTotalCapitalContributionsOfAllPartnersToPartnershipOptionOne" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumNetWorthPercentageOfTotalCapitalContributionsOfAllPartnersAndRelatedLimitedPartnershipsOptionOne" id="gpff_MinimumNetWorthPercentageOfTotalCapitalContributionsOfAllPartnersAndRelatedLimitedPartnershipsOptionOne" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumNetWorthPercentageOfUnitsBeingOfferedForSaleInPartnershipOptionOne" id="gpff_MinimumNetWorthPercentageOfUnitsBeingOfferedForSaleInPartnershipOptionOne" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TotalReturnOnInvestment" id="gpff_TotalReturnOnInvestment" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RatiosAsPercentageOfAverageNetAssetsAbstract" id="gpff_RatiosAsPercentageOfAverageNetAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AnnualizedExpensesPriorToIncentiveFeesPercentOfNetAssets" id="gpff_AnnualizedExpensesPriorToIncentiveFeesPercentOfNetAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncentiveFeesPercentOfNetAssets" id="gpff_IncentiveFeesPercentOfNetAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TotalExpensesPercentOfNetAssets" id="gpff_TotalExpensesPercentOfNetAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentGainLossNetAnnualizedPercentOfNetAssets" id="gpff_InvestmentGainLossNetAnnualizedPercentOfNetAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetRealizedAndChangesInUnrealizedIncomeLossFromTradingPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic" id="gpff_NetRealizedAndChangesInUnrealizedIncomeLossFromTradingPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_ExpensesNetOfInterestAndDividendIncomePerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic" name="ExpensesNetOfInterestAndDividendIncomePerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic" nillable="true" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionPercentageOfGeneralPartnerLimitedPartnershipInterestTreatedAsGeneralPartnershipInterest" id="gpff_RelatedPartyTransactionPercentageOfGeneralPartnerLimitedPartnershipInterestTreatedAsGeneralPartnershipInterest" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_BrokerageCommissionTransactionFeesToGeneralPartnerPercentage" name="BrokerageCommissionTransactionFeesToGeneralPartnerPercentage" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="OrganizationAndOfferingReimbursementFeesToGeneralPartnerPercentage" id="gpff_OrganizationAndOfferingReimbursementFeesToGeneralPartnerPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingExpenseReimbursementFeesToGeneralPartnerPercentage" id="gpff_OperatingExpenseReimbursementFeesToGeneralPartnerPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumOwnershipAmountOptionTwo" id="gpff_MinimumOwnershipAmountOptionTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AmountOfMinimumNetWorthOptionTwo" id="gpff_AmountOfMinimumNetWorthOptionTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="MaximumNetWorthToBeMaintained" id="gpff_MaximumNetWorthToBeMaintained" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFinancialHighlightsPartnershipActivityTable" id="gpff_ScheduleOfFinancialHighlightsPartnershipActivityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TradingSecuritiesAndEquityOptionsGainLossBeforeBrokerageCommissionsRevenueAbstract" id="gpff_TradingSecuritiesAndEquityOptionsGainLossBeforeBrokerageCommissionsRevenueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfAverageMonthEndNetAssetsAsBasisForDeterminingOperatingExpenseReimbursements" id="gpff_PercentageOfAverageMonthEndNetAssetsAsBasisForDeterminingOperatingExpenseReimbursements" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentTransactionsInvestmentIncomeAndExpensesPolicyTextBlock" id="gpff_InvestmentTransactionsInvestmentIncomeAndExpensesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_AssetsAllocatedToLimitedLiabilityCompanies" name="AssetsAllocatedToLimitedLiabilityCompanies" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element name="IncomeTaxesAbstract" id="gpff_IncomeTaxesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FuturesAndForwardContractsMember" name="FuturesAndForwardContractsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_InvestmentsByClassOfUnitsTextBlock" name="InvestmentsByClassOfUnitsTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_ScheduleOfSecuritiesOwnedTableTextBlock" name="ScheduleOfSecuritiesOwnedTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_ScheduleOfAssetsTableTextBlock" name="ScheduleOfAssetsTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_AssetsAndCondensedScheduleOfInvestmentsByClassOfUnitsAbstract" name="AssetsAndCondensedScheduleOfInvestmentsByClassOfUnitsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FinancialInstrumentsExcludingDerivativesOwnedAndNotPledgedAtFairValue" name="FinancialInstrumentsExcludingDerivativesOwnedAndNotPledgedAtFairValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="gpff_FinancialInstrumentsExcludingDerivativesOwnedAndNotPledgedCost" name="FinancialInstrumentsExcludingDerivativesOwnedAndNotPledgedCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="gpff_DerivativeOwnedAndPledgedAsCollateralFairValueOfOpenContractsNet" name="DerivativeOwnedAndPledgedAsCollateralFairValueOfOpenContractsNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="gpff_FuturesForwardAndSwapContractsMember" name="FuturesForwardAndSwapContractsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FuturesCommissionMerchantMember" name="FuturesCommissionMerchantMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FuturesCommissionMerchantsAndInterbankMarketMakersMember" name="FuturesCommissionMerchantsAndInterbankMarketMakersMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" abstract="true" />
  <xsd:element id="gpff_CashDepositedWithTradingCounterpartiesPercentOfAssetValue" name="CashDepositedWithTradingCounterpartiesPercentOfAssetValue" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_FuturesCommissionMerchantsInterbankMarketMakersAndSwapCounterpartiesMember" name="FuturesCommissionMerchantsInterbankMarketMakersAndSwapCounterpartiesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_NetGainLossOnDerivativeInstrumentsHeldForTradingPurposesNetOfCommissions" name="NetGainLossOnDerivativeInstrumentsHeldForTradingPurposesNetOfCommissions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="gpff_EmcMember" name="EmcMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_FairValueAssetsTransfersBetweenLevelsAmount" name="FairValueAssetsTransfersBetweenLevelsAmount" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="gpff_ScheduleOfDerivativeAssetsLiabilitiesAndCollateralReceivedByCounterpartyTableTextBlock" name="ScheduleOfDerivativeAssetsLiabilitiesAndCollateralReceivedByCounterpartyTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_OrganizationAndOfferingCostsAbstract" name="OrganizationAndOfferingCostsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_GainLossOnSecuritiesNetOfCommissions" name="GainLossOnSecuritiesNetOfCommissions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="gpff_AdmInvestorServicesMember" name="AdmInvestorServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_TradingGainsLossesNetOfCommissionsMarketableSecuritiesAndDerivatives" name="TradingGainsLossesNetOfCommissionsMarketableSecuritiesAndDerivatives" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="gpff_AllowableReimbursementOfOrganizationAndOfferingCostsAsPercentOfNetPartnershipAssetValueMonthly" name="AllowableReimbursementOfOrganizationAndOfferingCostsAsPercentOfNetPartnershipAssetValueMonthly" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_AllowableReimbursementOfOrganizationAndOfferingCostsAsPercentOfNetPartnershipAssetValueAnnually" name="AllowableReimbursementOfOrganizationAndOfferingCostsAsPercentOfNetPartnershipAssetValueAnnually" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="gpff_InvestmentsAxis" name="InvestmentsAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="gpff_InvestmentsDomain" name="InvestmentsDomain" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="FederalHomeLoanBankCertificatesAndObligationsFhlbOtherMember" id="gpff_FederalHomeLoanBankCertificatesAndObligationsFhlbOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TotalFuturesAndSwapContractsMember" id="gpff_TotalFuturesAndSwapContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FederalFarmCreditBankOtherMember" id="gpff_FederalFarmCreditBankOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PercentageOfAverageMonthEndNetAssetsPaidAsMonthlyManagementFeeToCashManager" id="gpff_PercentageOfAverageMonthEndNetAssetsPaidAsMonthlyManagementFeeToCashManager" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="GeneralPartnerClassMember" id="gpff_GeneralPartnerClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TotalReturnOnInvestmentBeforeGeneralPartnerContribution" id="gpff_TotalReturnOnInvestmentBeforeGeneralPartnerContribution" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PartnerCapitalAccountChangeRelatedToContributionsByGeneralPartnerNet" id="gpff_PartnerCapitalAccountChangeRelatedToContributionsByGeneralPartnerNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CapitalContributionsFromGeneralPartnerToOffsetChangesInValuation" id="gpff_CapitalContributionsFromGeneralPartnerToOffsetChangesInValuation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PartnerCapitalAccountPerUnitChangeRelatedToContributionsByGeneralPartnerNet" id="gpff_PartnerCapitalAccountPerUnitChangeRelatedToContributionsByGeneralPartnerNet" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MarexCapitalMarketsInc.Member" id="gpff_MarexCapitalMarketsInc.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RjOBrienAndAssociatesMember" id="gpff_RjOBrienAndAssociatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DerivativeOwnedAndPledgedAsCollateralFairValueOfUnrealizedGainOnOpenContracts" id="gpff_DerivativeOwnedAndPledgedAsCollateralFairValueOfUnrealizedGainOnOpenContracts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeOwnedAndPledgedAsCollateralFairValueOfUnrealizedLossOnOpenContracts" id="gpff_DerivativeOwnedAndPledgedAsCollateralFairValueOfUnrealizedLossOnOpenContracts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="NatureOfBusinessAndSignificantAccountingPoliciesTable" id="gpff_NatureOfBusinessAndSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NatureOfBusinessAndSignificantAccountingPoliciesLineItems" id="gpff_NatureOfBusinessAndSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="USTreasuryBillsMaturingJanuary22026Member" id="gpff_USTreasuryBillsMaturingJanuary22026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="USTreasuryBillsMaturingFebruary122026Member" id="gpff_USTreasuryBillsMaturingFebruary122026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="USTreasuryBillsMaturingMarch52026Member" id="gpff_USTreasuryBillsMaturingMarch52026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="USTreasuryBillsMaturingMarch122026Member" id="gpff_USTreasuryBillsMaturingMarch122026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SecuritiesPurchasedPayable" id="gpff_SecuritiesPurchasedPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
</xsd:schema>
