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XG background analysis question

Posted By: eXtreme Gammon
Date: Sunday, 8 November 2009, at 5:18 p.m.

In Response To: XG background analysis question (Jason Lee)

I am glad you are enjoying the program. XG uses 4 base threads with different priorities:

  • 1) Main interface: average priority
  • 2) Playing engine: average priority
  • 3) Background analyze (anything initiated by the player) : lower
  • 4) Background analyze (Initiated by the program) : lowest
So, Jason, you are right: playing will take precedence on the background analyze. If you want to Rollout a position while it analyze it will fall in the 3rd thread and it will take precendence on the rest of the backgroun analyze.

To jdg: you do not need to change the priority as the background analyze is already set under average: your PC will always be responsive even if the cpu is maxed out to 100%.

The parallel Rollouts are allmost done. The next release will also include Multi-core support (1.04 handles only 2, on my core i7 it is 3.5 faster: 1,680,000 position per second!). Last major addition is XGRoller+ (about 5-10 elo stronger, 4 time slower than XGRoller).

Xavier Dufaure de Citres

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