j"1LAnZuoQdcKCkpDBKQMCgziGMoPC4VQUckMB<div class="post"><div class="quoteheader"><a href="https://bitcointalk.org/index.php?topic=1334.msg18752#msg18752">Quote from: Vasiliev on October 27, 2010, 12:14:35 AM</a></div><div class="quote"><div class="quoteheader"><a href="https://bitcointalk.org/index.php?topic=1334.msg18469#msg18469">Quote from: sturle on October 25, 2010, 12:19:09 PM</a></div><div class="quote">Is poclbm.py supposed to use 100% CPU, and increase CPU usage of Xorg quite a bit as well?<br/><br/>I get about 11500 khash/s maximum from poclbm.py, which is the same I get from bitcoin when running on all 4 CPU cores. While poclbm.py is running, hash production from bitcoin is reduced to about 8k. Is this normal? Production from poclbm.py decreases if I reduce it's CPU share, e.g. by niceing it.<br/><br/>GPU is some ATI HD 5400 series.<br/></div>OpenCL can run on CPUs, too. It seems like that's what is happening. Maybe. Does poclbm ask you to choose your device when you start it?<br/><br/>My CPU usage is <5% for poclbm, so something's wrong.<br/></div>poclbm.py is instructed to use the video card, not the CPU. If I choose both (0,1), it uses 400% CPU for only 4 khash/s.<br/><br/>cProfile on poclbm.py overnight, and here is the function hogging my CPU:<br/><div class="codeheader">Code:</div><div class="code"> 2549577 85597.463 0.034 85597.463 0.034 __init__.py:284(event_wait)<br/></div><br/>This is defined in pyopencl:<br/><div class="codeheader">Code:</div><div class="code"> def event_wait(self):<br/> wait_for_events([self])<br/> return self<br/></div>Some kind of active wait loop in wait_for_events?<br/><br/>Btw -- polcbm.py claims to have found two blocks since it started, but only one is registered in my bitcoin client. :-/</div> text/html
https://whatsonchain.com/tx/a7da524c31cda1eef609dfeea6b9fcdfbdc0dc5ffbf3f62ef396287c0cc6cff6