On Tuesday, May 29, 2012 7:15:20 AM UTC-5, Vladimir Perić wrote: > > On Tue, May 29, 2012 at 1:33 PM, Guru Devanla <[email protected]> wrote: > > I did run the test using Live CD 12.04 64-bit. I see the same kind of > > behavior. > > > > May be I should also mention that my machine slows down for things like > > Flash and I am forced to restart my machine during such instances as > well ( > > just after watching 3/4 mi of video). I am not sure if this is related > at > > all. > > Ah, could it be that your CPU is overheating (and hence downclocking > itself), which kills performance? The whole SymPy test suite is > CPU-bottlenecked, but some of the tests in test_integrals are > particularly CPU-intensive. The CPU fan in my laptop died a few weeks > ago, and these are definite symptoms of it. To check, try monitoring > your fan speeds or, failing that, CPU temperatures. If they are > consistently high (eg. my laptop goes up to 80 degrees), then that is > the definite issue. >
> Now, was the issue with Flash video present from the start? If so, > it's possible your fans just aren't supported by current Linux kernels > (or badly supported); in that case, perhaps try if Windows would work > better. If it's a recent issue, it might be that you had the same > situation as me, so you could look into getting a replacement fan. The > third, and best possible, option, is that you've just had a gradual > build-up of dust in your CPU: in that case, get a can of compressed > air and try to clean it as much as you can (there are guides for this > on the internet, but the most important thing to remember is to use > just short bursts). Even just blowing from the outside (without > dissasembling your whole laptop) can be a tremendous help. > You just described the state of my machine!! I have noticed my machine slowing down lately when I watch Flash videos. I did notice that it was getting heated up. Similarly, the instant I start the tests under discussion, the temp shoots up to 80+ degrees > Good luck! (also note, don't listen to random guys on the internet too > much -- ie. if your laptop stops working, it's not my fault :)) > Will look into your advice and blame the appropriate person :) > > > > > One more observation was, after a complete restart, running ./bin/test > > sympy/test/test_integrals.py does take just under 2 minutes. But, > subsequent > > runs slow down drastically and takes up to 50 minutes.. > > > > Anyways, I don't plan on spending any more time on this now that I am > out of > > the weekend, and plan to switch to 12.04 ubuntu, hoping it will fix my > flash > > related problems as well. > > > > -Guru > > > > > > > > > > > > > > > > > > On Sunday, May 27, 2012 12:17:33 PM UTC-5, Vladimir Perić wrote: > >> > >> On Sun, May 27, 2012 at 6:26 PM, [email protected] > >> <[email protected]> wrote: > >> >> SymPy is creating a cache, it may be that the cache is filling up > your > >> >> available RAM and the machine starts to thrash. > >> >> (Does anybody know how much RAM a full SymPy test suite requires?) > >> >> > >> > My bot runs well on a 512MB machine. > >> > >> Yeah, the tests used to leak horribly, but we fixed that when we were > >> trying to get Jenkins to run, by clearing the cache between every two > >> files (see issue 2585 [1]). > >> > >> [1] http://code.google.com/p/sympy/issues/detail?id=2585 > >> > >> > > >> > And I do not get how one run of the tests (integrals) affects > >> > consecutive runs... > >> > > >> > >> Unfortunately, brings us back to swapping issues. I guess the root of > >> the cause is the 32-bit OS (and perhaps less importantly, the 32-bit > >> Python). Does anyone actually develop with a 32-bit Linux? > >> > >> Guru, if you happen to have too much spare time :), perhaps you could > >> try running a LiveCD of the 64-bit version of Ubuntu, and see if that > >> helps perhaps. Other than that, I'm quite clueless. > >> > >> -- > >> Vladimir Perić > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "sympy" group. > > To view this discussion on the web visit > > https://groups.google.com/d/msg/sympy/-/r6JQ05B1DAMJ. > > > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > > http://groups.google.com/group/sympy?hl=en. > > > > -- > Vladimir Perić > On Tuesday, May 29, 2012 7:15:20 AM UTC-5, Vladimir Perić wrote: > > On Tue, May 29, 2012 at 1:33 PM, Guru Devanla <[email protected]> wrote: > > I did run the test using Live CD 12.04 64-bit. I see the same kind of > > behavior. > > > > May be I should also mention that my machine slows down for things like > > Flash and I am forced to restart my machine during such instances as > well ( > > just after watching 3/4 mi of video). I am not sure if this is related > at > > all. > > Ah, could it be that your CPU is overheating (and hence downclocking > itself), which kills performance? The whole SymPy test suite is > CPU-bottlenecked, but some of the tests in test_integrals are > particularly CPU-intensive. The CPU fan in my laptop died a few weeks > ago, and these are definite symptoms of it. To check, try monitoring > your fan speeds or, failing that, CPU temperatures. If they are > consistently high (eg. my laptop goes up to 80 degrees), then that is > the definite issue. > > Now, was the issue with Flash video present from the start? If so, > it's possible your fans just aren't supported by current Linux kernels > (or badly supported); in that case, perhaps try if Windows would work > better. If it's a recent issue, it might be that you had the same > situation as me, so you could look into getting a replacement fan. The > third, and best possible, option, is that you've just had a gradual > build-up of dust in your CPU: in that case, get a can of compressed > air and try to clean it as much as you can (there are guides for this > on the internet, but the most important thing to remember is to use > just short bursts). Even just blowing from the outside (without > dissasembling your whole laptop) can be a tremendous help. > > Good luck! (also note, don't listen to random guys on the internet too > much -- ie. if your laptop stops working, it's not my fault :)) > > > > > One more observation was, after a complete restart, running ./bin/test > > sympy/test/test_integrals.py does take just under 2 minutes. But, > subsequent > > runs slow down drastically and takes up to 50 minutes.. > > > > Anyways, I don't plan on spending any more time on this now that I am > out of > > the weekend, and plan to switch to 12.04 ubuntu, hoping it will fix my > flash > > related problems as well. > > > > -Guru > > > > > > > > > > > > > > > > > > On Sunday, May 27, 2012 12:17:33 PM UTC-5, Vladimir Perić wrote: > >> > >> On Sun, May 27, 2012 at 6:26 PM, [email protected] > >> <[email protected]> wrote: > >> >> SymPy is creating a cache, it may be that the cache is filling up > your > >> >> available RAM and the machine starts to thrash. > >> >> (Does anybody know how much RAM a full SymPy test suite requires?) > >> >> > >> > My bot runs well on a 512MB machine. > >> > >> Yeah, the tests used to leak horribly, but we fixed that when we were > >> trying to get Jenkins to run, by clearing the cache between every two > >> files (see issue 2585 [1]). > >> > >> [1] http://code.google.com/p/sympy/issues/detail?id=2585 > >> > >> > > >> > And I do not get how one run of the tests (integrals) affects > >> > consecutive runs... > >> > > >> > >> Unfortunately, brings us back to swapping issues. I guess the root of > >> the cause is the 32-bit OS (and perhaps less importantly, the 32-bit > >> Python). Does anyone actually develop with a 32-bit Linux? > >> > >> Guru, if you happen to have too much spare time :), perhaps you could > >> try running a LiveCD of the 64-bit version of Ubuntu, and see if that > >> helps perhaps. Other than that, I'm quite clueless. > >> > >> -- > >> Vladimir Perić > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "sympy" group. > > To view this discussion on the web visit > > https://groups.google.com/d/msg/sympy/-/r6JQ05B1DAMJ. > > > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > > http://groups.google.com/group/sympy?hl=en. > > > > -- > Vladimir Perić > -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/P6HbBvpuIskJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
