Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
I am running in ipython. Now I do not have the problem anymore. %reset commands is a good solution. Thanks Frank Date: Tue, 9 Dec 2008 21:03:00 -0600 From: [EMAIL PROTECTED] To: numpy-discussion@scipy.org Subject: Re: [Numpy-discussion] how do I delete unused matrix to save the memory? On Mon, Dec 8, 2008 at 19:15, frank wang [EMAIL PROTECTED] wrote: Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. How are you running this program? Be aware that IPython may be holding on to objects and preventing them from being deallocated. For example: In [7]: !cat memtest.py class A(object): def __del__(self): print 'Deleting %r' % self a = A() In [8]: %run memtest.py In [9]: %run memtest.py In [10]: %run memtest.py In [11]: del a In [12]: Do you really want to exit ([y]/n)? $ python memtest.py Deleting __main__.A object at 0x915ab0 You can remove some of these references with %reset and maybe a gc.collect() for good measure. In [1]: %run memtest In [2]: %run memtest In [3]: %run memtest In [4]: %reset Once deleted, variables cannot be recovered. Proceed (y/[n])? y Deleting __main__.A object at 0xf3e950 Deleting __main__.A object at 0xf3e6d0 Deleting __main__.A object at 0xf3e930 -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion _ Send e-mail faster without improving your typing skills. http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
I have the same problem. I tried the del command below, but foundon that it removes the names of the ndarrays from memory, but does not free up the memory on my XP system (python 2.5.2, numpy 1.2.1). Regular python objects release their memory when I use the del command, but it looks like the ndarray objects do not. On Mon, Dec 8, 2008 at 22:00, Travis Vaught [EMAIL PROTECTED] wrote: Try: del(myvariable) Travis On Dec 8, 2008, at 7:15 PM, frank wang [EMAIL PROTECTED] wrote: Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. Thanks Frank -- Send e-mail faster without improving your typing skills. Get your Hotmail(R) account.http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008 ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
On Tue, Dec 9, 2008 at 20:40, Vagabond_Aero [EMAIL PROTECTED] wrote: I have the same problem. I tried the del command below, but foundon that it removes the names of the ndarrays from memory, but does not free up the memory on my XP system (python 2.5.2, numpy 1.2.1). Regular python objects release their memory when I use the del command, but it looks like the ndarray objects do not. It's not guaranteed that the regular Python objects return memory to the OS, either. The memory should be reused when Python allocates new memory, though, so I suspect that this is not the problem that Frank is seeing. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
On Mon, Dec 8, 2008 at 19:15, frank wang [EMAIL PROTECTED] wrote: Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. How are you running this program? Be aware that IPython may be holding on to objects and preventing them from being deallocated. For example: In [7]: !cat memtest.py class A(object): def __del__(self): print 'Deleting %r' % self a = A() In [8]: %run memtest.py In [9]: %run memtest.py In [10]: %run memtest.py In [11]: del a In [12]: Do you really want to exit ([y]/n)? $ python memtest.py Deleting __main__.A object at 0x915ab0 You can remove some of these references with %reset and maybe a gc.collect() for good measure. In [1]: %run memtest In [2]: %run memtest In [3]: %run memtest In [4]: %reset Once deleted, variables cannot be recovered. Proceed (y/[n])? y Deleting __main__.A object at 0xf3e950 Deleting __main__.A object at 0xf3e6d0 Deleting __main__.A object at 0xf3e930 -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
2008/12/10 Robert Kern [EMAIL PROTECTED]: On Mon, Dec 8, 2008 at 19:15, frank wang [EMAIL PROTECTED] wrote: Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. How are you running this program? Be aware that IPython may be holding on to objects and preventing them from being deallocated. For example: In [7]: !cat memtest.py class A(object): def __del__(self): print 'Deleting %r' % self a = A() In [8]: %run memtest.py In [9]: %run memtest.py In [10]: %run memtest.py In [11]: del a In [12]: Do you really want to exit ([y]/n)? $ python memtest.py Deleting __main__.A object at 0x915ab0 You can remove some of these references with %reset and maybe a gc.collect() for good measure. Of course, if you don't need to have access to the variables created in your program from the IPython session, you can run the program in a separate python process: In [1]: !python memtest.py Deleting __main__.A object at 0xb7da5ccc In [2]: !python memtest.py Deleting __main__.A object at 0xb7e5fccc Cheers, Scott ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] how do I delete unused matrix to save the memory?
Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. Thanks Frank _ Send e-mail faster without improving your typing skills. http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] how do I delete unused matrix to save the memory?
Try: del(myvariable) Travis On Dec 8, 2008, at 7:15 PM, frank wang [EMAIL PROTECTED] wrote: Hi, I have a program with some variables consume a lot of memory. The first time I run it, it is fine. The second time I run it, I will get MemoryError. If I close the ipython and reopen it again, then I can run the program once. I am looking for a command to delete the intermediate variable once it is not used to save memory like in matlab clear command. Thanks Frank Send e-mail faster without improving your typing skills. Get your Hotmail® account. ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
