how to install megengine cuda11.4 cudnn8.2.4?

[Ctu-SiTuShenPeng]

你好，我想问下我目前正在使用的环境是python3.8 cuda11.4 cudnn8.2.4，我应该怎么去安装megengine？我用了您的whl，但是cuda11.2，cudnn是8.1.1，他会报错：
RuntimeError: assertion `CUDNN_VERSION == cudnnGetVersion()' failed at ../../../../../../dnn/src/cuda/handle.cpp:58: megdnn::cuda::HandleImpl::HandleImpl(megcoreComputingHandle_t)
extra message: cudnn version mismatch: compiled with 8101; detected 8204 at runtime, may caused by customized environment, for example LD_LIBRARY_PATH on LINUX and PATH on Windows!!

[Qsingle]

因为WHL打包的时候是会修改rpath(主要是官方为了让用户免去装cuda和cudnn的这个过程，所以做了CUDA和CUDNN的依赖打包和这个检测)，但是这个会和PATH里面的冲突，所以可以把PATH里面关于CUDA和CUDNN的部分去除，不然就会出现编译用的版本和装的版本的冲突。

[Ctu-SiTuShenPeng]

好的，谢谢，我还想问下920m的显卡有问题吗，这个算力不知道能不能用

[Ctu-SiTuShenPeng]

还想问一下，目前这个框架可以只安装他的源码，不把cuda装进去吗？？这框架刚学习，还不太了解

[Qsingle]

目前来说他是会编进去的，所以不能那个。你可以直接安装官方的版本试试，那个不是该rpath而是直接静态链接了，所以不会出现这个问题，920m我不记得是不是cuda11好像不支持，可以查一下cuda11支持的架构。

[Ctu-SiTuShenPeng]

谢谢，我试一下

[Ctu-SiTuShenPeng]

哥，我想问个问题，不太熟悉，这个问题是不是我需要根据我的电脑情况编译对应的版本？
MegEngine 版本：1.9.0
GPU型号：Nvidia GeForce 920M
系统环境：Ubuntu
python版本: 3.8.10

完整报错信息：
RuntimeError: cuda error invalid device function(98) occurred; expr: cudaOccupancyMaxPotentialBlockSizeVariableSMem( &ret.grid_size, &ret.block_size, kern, s) error file:../../../../../../dnn/src/cuda/query_blocksize_impl.cu:50

backtrace:
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN3mgb13MegBrainErrorC1ERKSs+0x4a) [0x7ff04f023f8a]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(+0x20ed8a7) [0x7ff04f0718a7]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn12ErrorHandler15on_megdnn_errorERKSs+0x14) [0x7ff04f560f84]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn12ErrorHandler15on_megdnn_errorEPKc+0x22) [0x7ff04f562a82]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn4cuda20__throw_cuda_error__E9cudaErrorPKc+0x35) [0x7ff051265405]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn4cuda6detail39query_launch_config_for_kernel_uncachedEPKvRKNS0_10SmemGetterE+0x131) [0x7ff053552e21]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn4cuda30query_launch_config_for_kernelEPKvRKNS0_10SmemGetterE+0x312) [0x7ff05122a9e2]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(ZN6megdnn4cuda13elemwise_intl15get_launch_specEPKvmPiS4+0x3c) [0x7ff0511c70ec]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn4cuda22noncontig_general_intl13UserOpInvokerIiLi2EE9dispatch2INS0_16ParamElemVisitorILi1EiLNS0_10ContigTypeE1EEEEEvv+0xbc) [0x7ff0538442ec]
/usr/local/lib/python3.8/site-packages/megengine/core/lib/libmegengine_shared.so(_ZN6megdnn4cuda22copy_noncontig_generalERKNS_8TensorNDES3_P11CUstream_st+0x2b54) [0x7ff053742384]

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/ctu/Ctu_Project/Ctu_MegEngine/Classification/check_framwork.py", line 85, in
optimizer = SGD(net.parameters(), lr=0.01, momentum=0.9, weight_decay=5e-4)
File "/usr/local/lib/python3.8/site-packages/megengine/optimizer/sgd.py", line 48, in init
super().init(params, defaults)
File "/usr/local/lib/python3.8/site-packages/megengine/optimizer/optimizer.py", line 73, in init
self.add_param_group(group)
File "/usr/local/lib/python3.8/site-packages/megengine/optimizer/optimizer.py", line 100, in add_param_group
param._reset(Tensor(param.numpy(), no_cache=True))
File "/usr/local/lib/python3.8/site-packages/megengine/tensor.py", line 142, in numpy
return super().numpy()
megengine.core._imperative_rt.core2.AsyncError: An async error is reported. See above for the actual cause. Hint: This is where it is reported, not where it happened. You may call `megengine.config.async_level = 0 to get better error reporting.