User Guide

  • 2022.2
  • 08/08/2022
  • Public Content

Data Modified during Transmission

After checking that the data type signatures in a point-to-point message transfer or collective data gather/scatter operation at sender and receiver match, Intel ®Trace Collector also verifies that the data was transferred correctly by comparing additional checksums that are calculated inside the sending and receiving process. This adds another end-to-end data integrity check which will fail if any of the components involved in the data transmission malfunctioned (MPI layer, device drivers, hardware).
In cases where this
error is obviously the result of some other error, it is not reported separately. This currently works for truncated message receives and data type mismatches.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at