Using nvidia_dlprof_pytorch_nvtx.init() with apex errors out as "ModuleNotFoundError: No module named 'xentropy_cuda' "

Describe the Bug

Minimal Steps/Code to Reproduce the Bug

import nvidia_dlprof_pytorch_nvtx
nvidia_dlprof_pytorch_nvtx.init()

If apex is enabled, this code errors out as

    mod = importlib.import_module(modstr)
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 848, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/nipunagarwala/Documents/dlgraph_env/lib/python3.8/site-packages/apex/contrib/xentropy/__init__.py", line 1, in <module>
    from .softmax_xentropy import SoftmaxCrossEntropyLoss
  File "/home/nipunagarwala/Documents/dlgraph_env/lib/python3.8/site-packages/apex/contrib/xentropy/softmax_xentropy.py", line 3, in <module>
    import xentropy_cuda
ModuleNotFoundError: No module named 'xentropy_cuda'

Expected Behavior My expectation is that after apex is installed (which it was, successfully, with cuda-ext), then dlprof just works.

Environment

Collecting environment information...
PyTorch version: 2.1.0.dev20230701+cu121
Is debug build: False
CUDA used to build PyTorch: 12.1
ROCM used to build PyTorch: N/A

OS: Ubuntu 20.04.6 LTS (x86_64)
GCC version: (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
Clang version: Could not collect
CMake version: version 3.25.0
Libc version: glibc-2.31

Python version: 3.8.10 (default, May 26 2023, 14:05:08)  [GCC 9.4.0] (64-bit runtime)
Python platform: Linux-5.15.0-76-generic-x86_64-with-glibc2.29
Is CUDA available: True
CUDA runtime version: 12.2.91
CUDA_MODULE_LOADING set to: LAZY
GPU models and configuration: GPU 0: NVIDIA GeForce RTX 4080
Nvidia driver version: 535.54.03
cuDNN version: Could not collect
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: True

CPU:
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   39 bits physical, 48 bits virtual
CPU(s):                          8
On-line CPU(s) list:             0-7
Thread(s) per core:              2
Core(s) per socket:              4
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       GenuineIntel
CPU family:                      6
Model:                           158
Model name:                      Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
Stepping:                        9
CPU MHz:                         4169.822
CPU max MHz:                     4500.0000
CPU min MHz:                     800.0000
BogoMIPS:                        8400.00
Virtualization:                  VT-x
L1d cache:                       128 KiB
L1i cache:                       128 KiB
L2 cache:                        1 MiB
L3 cache:                        8 MiB
NUMA node0 CPU(s):               0-7
Vulnerability Itlb multihit:     KVM: Mitigation: VMX disabled
Vulnerability L1tf:              Mitigation; PTE Inversion; VMX conditional cache flushes, SMT vulnerable
Vulnerability Mds:               Mitigation; Clear CPU buffers; SMT vulnerable
Vulnerability Meltdown:          Mitigation; PTI
Vulnerability Mmio stale data:   Mitigation; Clear CPU buffers; SMT vulnerable
Vulnerability Retbleed:          Mitigation; IBRS
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2:        Mitigation; IBRS, IBPB conditional, STIBP conditional, RSB filling, PBRSB-eIBRS Not affected
Vulnerability Srbds:             Mitigation; Microcode
Vulnerability Tsx async abort:   Mitigation; TSX disabled
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities

Versions of relevant libraries:
[pip3] numpy==1.24.1
[pip3] nvidia-dlprof-pytorch-nvtx==1.8.0
[pip3] pytorch-triton==2.1.0+440fd1bf20
[pip3] torch==2.1.0.dev20230701+cu121
[pip3] torchaudio==2.1.0.dev20230702+cu121
[pip3] torchview==0.2.6
[pip3] torchvision==0.16.0.dev20230702+cu121
[pip3] torchviz==0.0.2
[pip3] triton==2.0.0
[conda] magma-cuda121             2.6.1                         1    pytorch
[conda] mkl                       2023.1.0         h6d00ec8_46342  
[conda] mkl-include               2023.1.0         h06a4308_46342  
[conda] nvidia-dlprof-pytorch-nvtx 1.8.0                    pypi_0    pypi

NVIDIA / apex

Using nvidia_dlprof_pytorch_nvtx.init() with apex errors out as "ModuleNotFoundError: No module named 'xentropy_cuda' " #1694