:orphan:
# PetscGetCPUTime
Returns the CPU time in seconds used by the process. 
## Synopsis
```
#include "petscsys.h" 
#include "petsctime.h" 
PetscErrorCode PetscGetCPUTime(PetscLogDouble *t)
```
Not Collective


## Output Parameter

- ***t -*** Time in seconds charged to the process.



## Example
```none
    #include <petscsys.h>
    ...
    PetscLogDouble t1, t2;

    PetscCall(PetscGetCPUTime(&t1));
    ... code to time ...
    PetscCall(PetscGetCPUTime(&t2));
    printf("Code took %f CPU seconds\n", t2-t1);
```





## Note
One should use the -log_view option of
PETSc for profiling. The CPU time is NOT a realistic number to
use since it does not include the time for message passing etc.
Also on many systems the accuracy is only on the order of microseconds.


## See Also
 `PetscTime()`, `PetscLogView()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/time/cputime.c.html#PetscGetCPUTime">src/sys/time/cputime.c</A>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/time/cputime.c)


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