Using the correct CPU

[LiNo]

Hi, I have been running a number of projects with some success, but I was just looking through a recent log file and I noticed this:

[15:55:42] CPU Identifier & Features
[15:55:42] -------------------------
[15:55:42] * CPU ID: GenuineIntel: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
[15:55:42] * SSE: yes
[15:55:42] * SSE2: yes
[15:55:42] * SSE3: yes
[15:55:42] * SSE41: yes
[15:55:42] * SSE42: yes
[15:55:42] * MMX: yes
[15:55:42] * MMXEXT: yes
[15:55:42] * 3DNOW: no
[15:55:42] * 3DNOWEXT: no
[15:55:42] * CMOV: yes
[15:55:42] * TSC: yes
[15:55:42] *INVARIANT TSC: yes
[15:55:42] * FPU: yes
[15:55:42] * PRO: yes
[15:55:42] * HT: no
[15:55:42] -------------------------

This is fine for the CPU, but is there something equivalent in the log related to the GPU? (I just want to make sure that Zephyr is running / recognising the GPU.)

Regards,

Noel.

[Andrea Alessi]

Hi Noel,

yes, you will find information on the gpu as well. However, if you suspect your GPU is not being used, you need to check in the actual computation. for example

[12:33:48] [CPU 0] [Record_2016-03-19_21-31-05.tiff] Loading image...

means that in a certain step, the CPU has been used, either because it was not available as a GPU action (not everything can be run on GPU) or because your GPU was not enabled. In this case, by nature, this step can be only run in CPU.

[12:33:48] [GPU 0] [Record_2016-03-19_21-31-05.tiff] Detecting keypoints...

In this case, you can see that the first GPU (GPU0) is being used by zephyr for the actual computation.

[LiNo]

Thanks Andrea. Does the "0" mean anything (CPU 0 / GPU 0)?

Regards,

Noel.

[Andrea Alessi]

Hi,

yes, it means it's the first one.

so for example, if you had two GPUs, you would see

[GPU 0] something...
[GPU 1] something...

where 0 is the first gpu and 1 is the second gpu, and so on. Same for CPUs.

[LiNo]

Great. Thanks again Andrea.