First learning into pycuda part 2

So I continue where I left off and explore further on the pycuda library. This is a good tutorial to explain further what the code does. You can read it more here .

 user@localhost:~$ optirun python3 test_cumath.py   
 Traceback (most recent call last):  
  File "test_cumath.py", line 245, in <module>  
   from py.test.cmdline import main  
 ImportError: No module named 'py'  

module py is actually pytest. So install away

 user@localhost:~$ sudo apt-get install python3-pytest  
 Reading package lists... Done  
 Building dependency tree      
 Reading state information... Done  
 The following packages were automatically installed and are no longer required:  
  libgl1-nvidia-glx:i386 libgl1-nvidia-glx-i386:i386 libllvm3.5v5 libnvidia-glcore:i386 linux-image-4.1.0-2-amd64 linux-image-4.2.0-1-amd64 linux-source-4.3 python3-ecdsa syslinux  
  unetbootin-translations  
 Use 'sudo apt autoremove' to remove them.  
 The following additional packages will be installed:  
  python3-py  
 The following NEW packages will be installed:  
  python3-py python3-pytest  
 0 upgraded, 2 newly installed, 0 to remove and 508 not upgraded.  
 Need to get 249 kB of archives.  
 After this operation, 962 kB of additional disk space will be used.  
 Do you want to continue? [Y/n] Y  
 Get:1 http://ftp.us.debian.org/debian testing/main amd64 python3-py all 1.4.31-1 [81.9 kB]  
 Get:2 http://ftp.us.debian.org/debian testing/main amd64 python3-pytest all 2.9.2-3 [167 kB]                                                   
 Fetched 249 kB in 6s (36.0 kB/s)                                                                                 
 Selecting previously unselected package python3-py.  
 (Reading database ... 285403 files and directories currently installed.)  
 Preparing to unpack .../python3-py_1.4.31-1_all.deb ...  
 Unpacking python3-py (1.4.31-1) ...  
 Selecting previously unselected package python3-pytest.  
 Preparing to unpack .../python3-pytest_2.9.2-3_all.deb ...  
 Unpacking python3-pytest (2.9.2-3) ...  
 Processing triggers for man-db (2.7.5-1) ...  
 Setting up python3-py (1.4.31-1) ...  
 Setting up python3-pytest (2.9.2-3) ...  

 user@localhost:~$ optirun python3 -mpytest test_cumath.py   
 ==================================================================================== test session starts =====================================================================================  
 platform linux -- Python 3.5.2+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1  
 rootdir: /home/user/, inifile:   
 collected 28 items   
   
 test_cumath.py ............................  
   
 ================================================================================ 28 passed in 106.94 seconds =================================================================================  

First run is very slow, I have no idea why. Then I run tests again.

 user@localhost:~$ optirun python3 -s -mpytest test_cumath.py   
 ==================================================================================== test session starts =====================================================================================  
 platform linux -- Python 3.5.2+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1  
 rootdir: /home/user/, inifile:   
 collected 28 items   
   
 test_cumath.py ............................  
   
 ================================================================================= 28 passed in 8.43 seconds ==================================================================================  
 user@localhost:~/oss/asus-rt-n14uhp-mrtg/src/pycuda$ optirun python3 -s -mpytest test_cumath.py   
 ==================================================================================== test session starts =====================================================================================  
 platform linux -- Python 3.5.2+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1  
 rootdir: /home/user/, inifile:   
 collected 28 items   
   
 test_cumath.py ............................  
   
 ================================================================================= 28 passed in 8.44 seconds ==================================================================================  

tests average at 8.5seconds, pretty good.  Then I add some code to print the time of the cpu and gpu, looks to me the maths test, cpu perform much better.

 name="<class 'numpy.float32'>" cpu time="0.00000230599835049360990524291992187500000000000000" gpu time="0.00008139800047501921653747558593750000000000000000"  
 name="<class 'numpy.float64'>" cpu time="0.00000265298876911401748657226562500000000000000000" gpu time="0.00008218799484893679618835449218750000000000000000"  
 name="<class 'numpy.float32'>" cpu time="0.00000343500869348645210266113281250000000000000000" gpu time="0.00007703299343120306730270385742187500000000000000"  
 name="<class 'numpy.float64'>" cpu time="0.00000536799780093133449554443359375000000000000000" gpu time="0.00008030000026337802410125732421875000000000000000"  
 name="<class 'numpy.float32'>" cpu time="0.00001179199898615479469299316406250000000000000000" gpu time="0.00007762899622321128845214843750000000000000000000"  
 name="<class 'numpy.float64'>" cpu time="0.00002014498750213533639907836914062500000000000000" gpu time="0.00010288099292665719985961914062500000000000000000"  
 name="<class 'numpy.float32'>" cpu time="0.00001173198688775300979614257812500000000000000000" gpu time="0.00007860400364734232425689697265625000000000000000"  
 name="<class 'numpy.float64'>" cpu time="0.00001884899393189698457717895507812500000000000000" gpu time="0.00007704700692556798458099365234375000000000000000"  
 name="<class 'numpy.float32'>" cpu time="0.00007372199615929275751113891601562500000000000000" gpu time="0.00008238101145252585411071777343750000000000000000"  
 name="<class 'numpy.float64'>" cpu time="0.00014613500388804823160171508789062500000000000000" gpu time="0.00016600399976596236228942871093750000000000000000"  

Have fun and you can get the code from my repository.