Intel® FPGA SDK for OpenCL™ Pro Edition: Programming Guide

ID 683846
Date 9/26/2022

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6.3.2. Profile Data Acquisition

Profile data acquisition from running kernels is paused during read back operations.
Attention: Although data acquisition is paused, kernels themselves are still running. Therefore, during read back operations, no kernel data is recorded.

Pausing data acquisition is not synchronized exactly across all kernels. The skew between halting profile data acquisition across kernels is dependent on the communication link with the device, driver overhead, and congestion on communication buses. Exact synchronized snapshotting of profile data between kernels should not be relied upon.