How to measure time inside Kenrel

Accelerated Computing CUDA CUDA Programming and Performance
1

There is any method to measure a part of code inside kernel?

2

There is any method to measure a part of code inside kernel?

3

clock()

4

clock()

5

The only thing to do is

void mykenrel(...)

{

...

  ...

  start = clock();

  for()

  ...

  ...

  end = clock();

  time = end - start;

}

The clock is time or cycle of gpu? If it is cycles how can I take time?

6

The only thing to do is

void mykenrel(...)

{

...

  ...

  start = clock();

  for()

  ...

  ...

  end = clock();

  time = end - start;

}

The clock is time or cycle of gpu? If it is cycles how can I take time?

7

If core clock cycles (half of the shader clock).

8

If core clock cycles (half of the shader clock).

9

The deviceQuery print Clock rate = 1.9Ghz. I must divide with this rate? Also this rate is from a processor of my 128 or the rate for all processor together?

10

The deviceQuery print Clock rate = 1.9Ghz. I must divide with this rate? Also this rate is from a processor of my 128 or the rate for all processor together?

11

I understand that all thread in one block do the same number of clocks but how can I take time from clocks?

12

I understand that all thread in one block do the same number of clocks but how can I take time from clocks?

13

Interested as well