Manually specify flags if no arch set

[drisspg]

Stacked PRs:

• ->Manually specify flags if no arch set #2219

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Manually specify flags if no arch set

[pytorch-bot]

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❌ 4 New Failures, 1 Unrelated Failure

As of commit 4b2746d with merge base adc78b7 ():

NEW FAILURES - The following jobs have failed:

• Run Regression Tests / test (CUDA 2.5.1, linux.g5.12xlarge.nvidia.gpu, torch==2.5.1 --index-url https://download.pytorch... / linux-job (gh)
  test/sparsity/test_sparse_api.py::TestQuantSemiSparse::test_sparse_marlin_compile_True
• Run Regression Tests / test (CUDA 2.6, linux.g5.12xlarge.nvidia.gpu, torch==2.6.0, cuda, 12.6) / linux-job (gh)
  test/test_ops.py::TestOps::test_quant_llm_linear_ebits_3_mbits_2_float16
• Run Regression Tests / test (CUDA 2.7, linux.g5.12xlarge.nvidia.gpu, torch==2.7.0, cuda, 12.6) / linux-job (gh)
  test/test_ops.py::TestOps::test_quant_llm_linear_ebits_3_mbits_2_float16
• Run Regression Tests / test-nightly (CUDA Nightly, linux.g5.12xlarge.nvidia.gpu, --pre torch --index-url https://downloa... / linux-job (gh)
  test/test_ops.py::TestOps::test_quant_llm_linear_ebits_3_mbits_2_float16

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• Run Float8 Tests / test (SM-89, linux.g6.4xlarge.experimental.nvidia.gpu, --pre torch --index-url https://download.p... / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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[drisspg]

I am trying to unblock: #2207 (comment)
I don't know what the spanning versions we should add by default though are

[drisspg]

cc @msaroufim

[mxz297]

@drisspg this pr seems to also fail but with some different failures... Are trunk tests all healthy?