[JAX] Ensure JAX reference impl uses an accurate backend in our tests (#2322)

Ensure JAX reference impl uses an accurate backend
Signed-off-by: Jeremy Berchtold <jberchtold@nvidia.com>

qa/L1_jax_distributed_unittest/test.sh

@@ -8,5 +8,6 @@ set -xe
 : ${XML_LOG_DIR:=/logs}
 mkdir -p "$XML_LOG_DIR"
 
-NVTE_JAX_UNITTEST_LEVEL="L1" python3 -m pytest -c $TE_PATH/tests/jax/pytest.ini -v --junitxml=$XML_LOG_DIR/pytest.xml $TE_PATH/tests/jax/test_distributed_*
+# Use --xla_gpu_enable_triton_gemm=false to ensure the reference JAX implementation we are using is accurate.
+XLA_FLAGS="$XLA_FLAGS --xla_gpu_enable_triton_gemm=false" NVTE_JAX_UNITTEST_LEVEL="L1" python3 -m pytest -c $TE_PATH/tests/jax/pytest.ini -v --junitxml=$XML_LOG_DIR/pytest.xml $TE_PATH/tests/jax/test_distributed_*
 SCRIPT_NAME=$TE_PATH/tests/jax/test_multi_process_distributed_grouped_gemm.py bash $TE_PATH/tests/jax/multi_process_launch.sh

qa/L2_jax_distributed_unittest/test.sh

@@ -8,4 +8,5 @@ set -xe
 : ${XML_LOG_DIR:=/logs}
 mkdir -p "$XML_LOG_DIR"
 
-NVTE_JAX_UNITTEST_LEVEL="L2" python3 -m pytest -c $TE_PATH/tests/jax/pytest.ini -v --junitxml=$XML_LOG_DIR/pytest.xml $TE_PATH/tests/jax/test_distributed_*
+# Use --xla_gpu_enable_triton_gemm=false to ensure the reference JAX implementation we are using is accurate.
+XLA_FLAGS="$XLA_FLAGS --xla_gpu_enable_triton_gemm=false" NVTE_JAX_UNITTEST_LEVEL="L2" python3 -m pytest -c $TE_PATH/tests/jax/pytest.ini -v --junitxml=$XML_LOG_DIR/pytest.xml $TE_PATH/tests/jax/test_distributed_*