Hello nv experts:
I want to apply DMACpy(memory to memory) in user space on my ORIN
but, I didn’t find this interface in orin’s documents.
So, Is there anyone would like to tell me how to apply “DMACpy”?
Hi,
Here are some suggestions for the common issues:
1. Performance
Please run the below command before benchmarking deep learning use case:
$ sudo nvpmodel -m 0
$ sudo jetson_clocks
2. Installation
Installation guide of deep learning frameworks on Jetson:
- TensorFlow: Installing TensorFlow for Jetson Platform - NVIDIA Docs
- PyTorch: Installing PyTorch for Jetson Platform - NVIDIA Docs
We also have containers that have frameworks preinstalled:
Data Science, Machine Learning, AI, HPC Containers | NVIDIA NGC
3. Tutorial
Startup deep learning tutorial:
- Jetson-inference: Hello AI World guide to deploying deep-learning inference networks and deep vision primitives with TensorRT and NVIDIA Jetson
- TensorRT sample: Jetson/L4T/TRT Customized Example - eLinux.org
4. Report issue
If these suggestions don’t help and you want to report an issue to us, please attach the model, command/step, and the customized app (if any) with us to reproduce locally.
Thanks!
yes, I’ve executed these:
$ sudo nvpmodel -m 0
$ sudo jetson_clocks
another question, I tested dmatest in /sys/moudel/dmatest
I found the performance is very poor, like this:
[ 4772.549480] dmatest: dma0chan20-copy: summary 100 tests, 0 failures 2179.97 iops 63611 KB/s (0)
[ 4772.550068] dmatest: dma0chan24-copy: summary 100 tests, 0 failures 2160.43 iops 65180 KB/s (0)
[ 4772.551772] dmatest: dma0chan21-copy: summary 100 tests, 0 failures 2117.60 iops 63867 KB/s (0)
[ 4772.552270] dmatest: dma0chan30-copy: summary 100 tests, 0 failures 2076.79 iops 64962 KB/s (0)
[ 4772.552568] dmatest: dma0chan22-copy: summary 100 tests, 0 failures 2045.61 iops 64273 KB/s (0)
[ 4772.554065] dmatest: dma0chan27-copy: summary 100 tests, 0 failures 2000.43 iops 64494 KB/s (0)
[ 4772.554094] dmatest: dma0chan26-copy: summary 100 tests, 0 failures 1989.45 iops 64518 KB/s (0)
[ 4772.555911] dmatest: dma0chan23-copy: summary 100 tests, 0 failures 1942.34 iops 63903 KB/s (0)
[ 4772.557894] dmatest: dma0chan25-copy: summary 100 tests, 0 failures 1855.04 iops 64518 KB/s (0)
[ 4772.558226] dmatest: dma0chan28-copy: summary 100 tests, 0 failures 1861.50 iops 63682 KB/s (0)
[ 4772.558659] dmatest: dma0chan29-copy: summary 100 tests, 0 failures 1841.71 iops 64423 KB/s (0)
I cannot explain above performance, So, I want to write a c/c++ code to check these tests result
There is no update from you for a period, assuming this is not an issue anymore.
Hence, we are closing this topic. If need further support, please open a new one.
Thanks
Hi,
Have you tried memcpy on the user space?
Thanks.