| 2012-03-16 08:05:13 |
zarquon42 |
bug |
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added bug |
| 2012-03-16 08:05:13 |
zarquon42 |
attachment added |
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System Monitor_045.png https://bugs.launchpad.net/bugs/956753/+attachment/2879599/+files/System%20Monitor_045.png |
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| 2012-03-16 08:07:58 |
zarquon42 |
attachment removed |
System Monitor_045.png https://bugs.launchpad.net/ubuntu/+source/atlas/+bug/956753/+attachment/2879599/+files/System%20Monitor_045.png |
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| 2012-03-16 08:08:19 |
zarquon42 |
description |
First of all, the option to easyily compile a multithreaded atlas is just great!
However, I compared the speed to the one from the OpenBLAS library and recognized it to be approx. 30% slower. When examining the CPU-load during calculation, I saw atlas only using 70% of the CPU horsepower (while OpenBlas uses full 100%) and wondered, if there was an option during compiling that can trigger atlas to gain full speed.
I attached a screenshot of the CPU monitoring.
Thank you in advance
Stefan |
First of all, the option to easyily compile a multithreaded atlas is just great!
However, I compared the speed to the one from the OpenBLAS library and recognized it to be approx. 30% slower. When examining the CPU-load during calculation, I saw atlas only using 70% of the CPU horsepower (while OpenBlas uses full 100%) and wondered, if there was an option during compiling that can trigger atlas to gain full speed.
I attached a screenshot of the CPU monitoring.
Thank you in advance
Stefan |
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| 2012-03-16 08:09:07 |
zarquon42 |
attachment added |
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System load during calculation https://bugs.launchpad.net/ubuntu/+source/atlas/+bug/956753/+attachment/2879600/+files/System%20Monitor_046.png |
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| 2012-03-16 08:10:44 |
zarquon42 |
description |
First of all, the option to easyily compile a multithreaded atlas is just great!
However, I compared the speed to the one from the OpenBLAS library and recognized it to be approx. 30% slower. When examining the CPU-load during calculation, I saw atlas only using 70% of the CPU horsepower (while OpenBlas uses full 100%) and wondered, if there was an option during compiling that can trigger atlas to gain full speed.
I attached a screenshot of the CPU monitoring.
Thank you in advance
Stefan |
First of all, the option to easyily compile a multithreaded atlas is just great!
However, I compared atlas to the OpenBLAS library and recognized it to be approx. 30% slower. When examining the CPU-load during calculation, I saw atlas only using 70% of the CPU horsepower (while OpenBlas uses full 100%) and wondered, if there was an option during compiling that can trigger atlas to gain full speed.
I attached a screenshot of the CPU monitoring.
Thank you in advance
Stefan |
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