JetPack 5.0.2 NvSciStream sample

[happy886]

Nvidia-l4t-nvsci is included in the new version of JetPack 5.0.2 ,R35.1.0
\35.1-public_sources\Linux_for_Tegra\source\public\nvsci_headers include nvscibuf.h 、nvscisync.h and nvscistream.h

\35.1-public_sources\Linux_for_Tegra\source\public\nvsci_samples_src include event_sample_app and rawstream

Can you provide the NvSciStream sample？
Can you provide the NvSciIpc sample withou cuda ?

[AastaLLL]

Hi,

You can find some NvSciStream usage in the event_sample_app.

We don’t have a sample for CPU usage.
Please modify it from the rawstream sample.

Thanks.

[happy886]

How to modify the rawstream example ，especially the CudaSync part ？use NvSciSyncAttrListCreate empty sync attribute ？Could you be more specific?
eg：
line 263 // Set up CUDA sync objects, importing NvSciSync objects
if (!setupCudaSync(&cudaInfo, producerSignalObj, producerWaitObj)) {
goto done;
}
if i use malloc memory for NvSciIpc without cuda,how can i modify the rawstream api of setupCudaSync funcation in rawstream_producer.c line 263?

setupCudaSync,setupCudaBufAttr,setupCudaBuffer,waitCudaFence,signalCudaFence funcation in rawstream_cuda.c file ，What should I replace these functions with?

[AastaLLL]

Hi,

We are checking with our internal team to see if we can provide a sample for host memory.
Will share more information with you.

Thanks.

[happy886]

thank you,How long will it take?
If it takes a long time, can you give me a piece of pseudocode and I’ll try it

[happy886]

can you give me a piece of pseudocode first ？

[AastaLLL]

Hi,

In general, it can work by removing all the CUDA part settings.
There are some samples in the document shared in the previous topic.

CPU Signaler Usage (p.85)
CPU Waiter Usage (p.88)

Thanks.

[AastaLLL]

Hi,

Here is a sample for your reference.
The patch is modified from the original rawstream sample.
0001-Update-to-use-CPU-buffer.patch (19.3 KB)

Thanks.