[sage-support] Re: Improving a Sage program that is heavy on matrix multipliaction

2014-12-07 Thread Nathann Cohen
> Just for fun I wrote an equivalent program in C and tested the Sage function > and an equivalent C program on 1 instance of the problem. Honestly I am not surprised, what you do in this code can be done with elementary processor operations, and Python definitely is not the best language for that

[sage-support] Error when starting Sage 6.4.1 virtual machine

2014-12-07 Thread ThM55
Hello. I am unable to start Sage on Virtualbox (version 4.3.20 r96997) under Windows Vista. The versions of Sage that I tried are 6.3 and 6.4.1. I get an error screen shown in attachment for v64.1. It says "Failed to load VMMR0.r0. I must say I've never succeeded starting any version of Sage o

[sage-support] Re: Improving a Sage program that is heavy on matrix multipliaction

2014-12-07 Thread Jernej
Just for fun I wrote an equivalent program in C and tested the Sage function and an equivalent C program on 1 instance of the problem. === $ time ./a.out test real0m0.366s user0m0.306s sys 0m0.060s === And Sage === $ time sage test.sage test real2m6.285s user2m5.256s sys