• 12/19/2018
  • Public Content

Intel® Immediate Command Execution

Immediate Command Execution extension enables you to execute OpenCL™ commands in a single-threaded manner using the calling thread to perform the actual execution.
To use this extension, add token
to the queue properties when executing
calls to that queue are synchronous – they return only after the queued command finishes executing. Only the thread calling
executes those commands, which also includes calls to
The extension tokens are defined in the
file, which is provided with Intel® SDK for OpenCL™ Applications (https://software.intel.com/en-us/intel-opencl) .
Using this extension, you can create a command queue alongside the rest of the queues and use it to execute lightweight kernels or NDRanges with a high granularity (small global size) that cannot gain much from the Intel® multi-core architecture. You will still get the full benefits of the compiler, including the automatic vectorization module.
An Immediate Command Execution queue can be in-order or out-of-order. In the in-order mode, if multiple threads are added to the same queue at the same time, they block each other to comply with the OpenCL in-order queue semantics. Therefore, you should use the combination of

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.