Validate Errors for Binary Radio Pulsar Search (Arecibo) v1.34 () windows_x86_64 tasks

Joined: 22 Apr 18
Posts: 12
Credit: 10,993,571
RAC: 0
Topic 216477

I started running Einstein@Home jobs on an old Dell computer about a month ago. The machine has been running Gamma-Ray Pulsar Search tasks in the CPUs and Binary Radio Pulsar Searches in the Intel GPU. I have noticed that typically about 4 to 6 of the latter tasks result in validate errors each day, while most of these tasks complete normally and are validated. Is this normal?

Joined: 4 Sep 05
Posts: 1,364
Credit: 3,562,358,667
RAC: 5

It's probably driver related,

It's probably driver related, and depending on your CPU there may or may not be a driver that works reliably.  I've been told the issue is that a lot of Intel's GPU compute drivers accumulate rounding errors at a higher rate than AMD or NVidia's drivers do, with the result that their results don't reliably validate with anything else.  The only intel GPU I compute on is an i5-6200 laptop; and it runs SETI because the last time I'd asked around they were the only project to have an app that didn't have a significant percentage of validation errors.  (SETI apparently had to write a different compute path for the intel GPU that is slower but reduces the error accumulation rate.)

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.