[Multi-host GPU]Integrate GPU topology into PjRtClient for multi-host GPU support #68444
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… GPU support --Integrate GpuTopology into PjRtTopologyDescription to represent multi-host GPU topologies --Utilize GlobalTopology to build GpuTopology during PjRt client creation --Update relevant tests FUTURE_COPYBARA_INTEGRATE_REVIEW=openxla/xla#12942 from openxla:fix_test_cudnn c438b08ea7240c23ae98bc8dcf4ef45fa6d2e89c PiperOrigin-RevId: 636217560
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[Multi-host GPU]Integrate GPU topology into PjRtClient for multi-host GPU support
--Integrate GpuTopology into PjRtTopologyDescription to represent multi-host GPU topologies
--Utilize GlobalTopology to build GpuTopology during PjRt client creation
--Update relevant tests
FUTURE_COPYBARA_INTEGRATE_REVIEW=openxla/xla#12942 from openxla:fix_test_cudnn c438b08ea7240c23ae98bc8dcf4ef45fa6d2e89c