Prerequisites (Linux* OS)

Set Environment Variables

The Unified Directory Layout was implemented in 2024.0. If you have multiple toolkit versions installed, the Unified layout adds the ability to ensure your development environment contains the component versions that were released as part of that specific toolkit version. The directory layout that was used prior to 2024.0 is still supported on new and existing installations. This prior layout is called the Component Directory Layout. Now you have the option to use the Component Directory Layout or the Unified Directory Layout.

To learn more about the two directory layouts, see Use the setvars Script with Linux* or Windows*.

After installing Intel IPP, set the IPPROOT, LD_LIBRARY_PATH, and NLSPATH environment variables by running the script appropriate to your target platform architecture. The scripts are available in <install dir>/env.

By default, the <install dir> is:

Component Directory Layout - For admin: /opt/intel/oneapi - For user: ~/intel/oneapi

Unified Directory Layout - For admin: /opt/intel/oneapi/<toolkit-version> - For user: ~/intel/oneapi/<toolkit-version>

See Intel IPP high-level directories structure.

Build and Run Your First Intel® IPP Application (Linux* OS)

The code example below represents a short application to help you get started with Intel IPP:

#include <stdio.h>
#include "ipp.h"

#define PRINT_INFO(feature, text) printf("  %-30s= ", #feature); \
      printf("%c\t%c\t", (cpuFeatures & feature) ? 'Y' : 'N', (enabledFeatures & feature) ? 'Y' : 'N'); \
      printf( #text "\n")

int main(int argc, char* argv[])
{
      const       IppLibraryVersion *libVersion;
      IppStatus   status;
      Ipp64u      cpuFeatures, enabledFeatures;

      ippInit();                      /* Initialize Intel® IPP library */
      libVersion = ippGetLibVersion(); /* Get Intel® IPP library version info */
      printf("%s %s\n", libVersion->Name, libVersion->Version);

      status = ippGetCpuFeatures(&cpuFeatures, 0); /* Get CPU features and features enabled with selected library level */
      if (ippStsNoErr != status) return status;
      enabledFeatures = ippGetEnabledCpuFeatures();
      printf("Features supported: by CPU\tby Intel® IPP\n");
      printf("------------------------------------------------\n");
      PRINT_INFO(ippCPUID_MMX,        Intel® Architecture MMX technology supported);
      PRINT_INFO(ippCPUID_SSE,        Intel® Streaming SIMD Extensions);
      PRINT_INFO(ippCPUID_SSE2,       Intel® Streaming SIMD Extensions 2);
      PRINT_INFO(ippCPUID_SSE3,       Intel® Streaming SIMD Extensions 3);
      PRINT_INFO(ippCPUID_SSSE3,      Supplemental Streaming SIMD Extensions 3);
      PRINT_INFO(ippCPUID_MOVBE,      Intel® MOVBE instruction);
      PRINT_INFO(ippCPUID_SSE41,      Intel® Streaming SIMD Extensions 4.1);
      PRINT_INFO(ippCPUID_SSE42,      Intel® Streaming SIMD Extensions 4.2);
      PRINT_INFO(ippCPUID_AVX,        Intel® Advanced Vector Extensions instruction set);
      PRINT_INFO(ippAVX_ENABLEDBYOS,  Intel® Advanced Vector Extensions instruction set is supported by OS);
      PRINT_INFO(ippCPUID_AES,        Intel® AES New Instructions);
      PRINT_INFO(ippCPUID_CLMUL,      Intel® CLMUL instruction);
      PRINT_INFO(ippCPUID_RDRAND,     Intel® RDRAND instruction);
      PRINT_INFO(ippCPUID_F16C,       Intel® F16C new instructions);
      PRINT_INFO(ippCPUID_AVX2,       Intel® Advanced Vector Extensions 2 instruction set);
      PRINT_INFO(ippCPUID_ADCOX,      Intel® ADOX/ADCX new instructions);
      PRINT_INFO(ippCPUID_RDSEED,     Intel® RDSEED instruction);
      PRINT_INFO(ippCPUID_PREFETCHW,  Intel® PREFETCHW instruction);
      PRINT_INFO(ippCPUID_SHA,        Intel® Secure Hash Algorithm - New Instructions);
      PRINT_INFO(ippCPUID_AVX512F,    Intel® Advanced Vector Extensions 512 Foundation instruction set);
      PRINT_INFO(ippCPUID_AVX512CD,   Intel® Advanced Vector Extensions 512 CD instruction set);
      PRINT_INFO(ippCPUID_AVX512ER,   Intel® Advanced Vector Extensions 512 ER instruction set);
      PRINT_INFO(ippCPUID_AVX512PF,   Intel® Advanced Vector Extensions 512 PF instruction set);
      PRINT_INFO(ippCPUID_AVX512BW,   Intel® Advanced Vector Extensions 512 BW instruction set);
      PRINT_INFO(ippCPUID_AVX512VL,   Intel® Advanced Vector Extensions 512 VL instruction set);
      PRINT_INFO(ippCPUID_AVX512VBMI, Intel® Advanced Vector Extensions 512 Bit Manipulation instructions);
      PRINT_INFO(ippCPUID_MPX,        Intel® Memory Protection Extensions);
      PRINT_INFO(ippCPUID_AVX512_4FMADDPS,    Intel® Advanced Vector Extensions 512 DL floating-point single precision);
      PRINT_INFO(ippCPUID_AVX512_4VNNIW,      Intel® Advanced Vector Extensions 512 DL enhanced word variable precision);
      PRINT_INFO(ippCPUID_KNC,        Intel® Xeon Phi™ Coprocessor);
      PRINT_INFO(ippCPUID_AVX512IFMA, Intel® Advanced Vector Extensions 512 IFMA (PMADD52) instruction set);
      PRINT_INFO(ippAVX512_ENABLEDBYOS,       Intel® Advanced Vector Extensions 512 is supported by OS);
      return 0;
}

This application consists of three sections:

1. Initialize the Intel IPP library. This stage is required to take advantage of full Intel IPP optimization. With ippInit(), the best implementation layer is dispatched at runtime; otherwise, the least optimized implementation is chosen. If the Intel IPP application runs without ippInit(), the Intel IPP library is auto-initialized with the first call of the Intel IPP function from any domain that is different from ippCore. In certain debugging scenarios, it is helpful to force a specific implementation layer using ippSetCpuFeatures(), instead of the best as chosen by the dispatcher.

2. Get the library layer name and version. You can also get the version information using the ippversion.h file located in the <install_dir>/include directory.

3. Show the hardware optimizations used by the selected library layer and supported by CPU.

To build the code example above, follow the steps:

1. Paste the code into the editor of your choice.

2. Make sure the compiler and Intel IPP variables are set in your shell.

3. Compile with the following command:

   icc ipptest.cpp -o ipptest -I$IPPROOT/include -L$IPPROOT/lib/<arch> -lippcore

   For more information about which Intel IPP libraries you need to link to, see Intel IPP Developer Guide.

4. Run the application.

Training and Documentation

Notices and Disclaimers

Intel, the Intel logo, Intel Atom, Intel Core, Intel Xeon Phi, VTune and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries.

*Other names and brands may be claimed as the property of others.

© Intel Corporation.

This software and the related documents are Intel copyrighted materials, and your use of them is governed by the express license under which they were provided to you (License). Unless the License provides otherwise, you may not use, modify, copy, publish, distribute, disclose or transmit this software or the related documents without Intel’s prior written permission.

This software and the related documents are provided as is, with no express or implied warranties, other than those that are expressly stated in the License.