I was about to abandon GIMPS because I was afraid that excess heat was damaging my laptop. Jeff and Todd suggested putting some space underneath to improve airflow. I have done this, and now the computer is screaming along at an iteration time of 0.041 sec.
The advice I get from this newsgroup is just plain excellent.
Jeff Lewis wrote:
I've got my laptop on a lazy-susan type platform that lifts it about a centimeter above the tabletop and purports to improve cooling. I suspect it does. Got it at Staples.
Best,
Jeff
Todd Lewis wrote:
If it's heat, have you tried elevating it a bit so that it can get air underneath the bottom of the laptop. Most docking stations have ridges to provide air movment under the lap top. A couple of pencils will work as long as your not really working on it.
I wrote:
About a week ago, I started Prime95, version 23.8.1, running on a HP Laptop, Pentium 4, 3GHz, Windows XP. During the first few days, the iteration time was about 0.065 sec., but in the past few days, it has started to creep upwards, and is now more than 0.09 sec. I am testing exponent 22681363.
What do you think this persistent upward creep means?
I just did an experiment. Turned the program off for several minutes, then back on. The iteration times that followed were: 0.042, 0.077, 0.084, 0.089 sec. Obviously the time goes up as the machine heats. Is this liable to be dangerous?
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