4 merge requests!368Update prace.md to document the change from qprace to qprod as the default...,!367Update prace.md to document the change from qprace to qprod as the default...,!366Update prace.md to document the change from qprace to qprod as the default...,!323extended-acls-storage-section
Performance Application Programming Interface (PAPI) is a portable interface to access hardware performance counters (such as instruction counts and cache misses) found in most modern architectures. With the new component framework, PAPI is not limited only to CPU counters, but offers also components for CUDA, network, Infiniband, etc.
PAPI provides two levels of interface - a simpler high-level interface and more detailed low-level interface.
PAPI provides two levels of interface: a simpler high-level interface and more detailed low-level interface.
PAPI can be used with parallel as well as serial programs.
## Usage
To use PAPI, load the papi [module][1]:
To use PAPI, load the `papi`[module][1]:
```console
$ml papi
```
This will load the default version. Execute ml av papi for the list of installed versions.
This will load the default version. Execute `ml av papi` for the list of installed versions.
## Utilities
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@@ -86,7 +86,7 @@ To use PAPI in your application, you need to link the appropriate include file.
* f90papi.h for Fortran 90
* fpapi.h for Fortran with preprocessor
The include path is automatically added by´the papi module to $INCLUDE.
The include path is automatically added bythe `papi` module to `$INCLUDE`.
### High-Level API
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!!! note
PAPI currently supports only a subset of counters on the Intel Xeon Phi processor compared to Intel Xeon, for example the floating point operations counter is missing.
To use PAPI in [Intel Xeon Phi][2] native applications, you need to load the module with " -mic" suffix, for example " papi/5.3.2-mic":
To use PAPI in [Intel Xeon Phi][2] native applications, you need to load the module with the `-mic` suffix, for example `papi/5.3.2-mic`:
