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Tag: cuda

Kernel update breaks CUDA

I have a NVIDIA Grid K2 GPU allocated to a virtual server running Ubuntu 14.04. To reinstall the proper drivers after an automatic kernel update I ran sudo apt-get update followed by sudo apt-get install nvidia-current. Now I cannot get CUDA 7.5 to work any longer. If I run the deviceQuery sample I get the fo…

__ldg causes slower execution time in certain situation

I posted this issue already yesterday, but wasnt well received, though I have solid repro now, please bear with me. Here are system specs: Tesla K20m with 331.67 driver, CUDA 6.0, Linux machine. Now I have a global memory read heavy application therefore I tried to optimize it using __ldg instruction on every…

How do I get my CUDA specs on a Linux machine?

I’m accessing a remote machine that has a good nVidia card for CUDA computing, but I can’t find a way to know which card it uses and what are the CUDA specs (version, etc.). I used the “lspci” command on the terminal, but there is no sign of a nvidia card. I’m pretty sure it has …