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0answers
25 views

apache mod_security and performance

I have a list of bots to block, so I was thinking that fail2ban could be a solution until I realized that mod_security would be more efficient in this kind of tasks. The number of bots is huge, so ...
1
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1answer
81 views

Strategies for building distributed computing system with hybrid Mac and Linux systems

I want to build a distributed computing system to run Matlab, C and other programming languages for scientific computing. Now I've several old Mac machines with Lion Mac OS installed acted as web ...
2
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1answer
271 views

tmpfs performance

I use avconv to make screen recording of gameplays on linux (yeah, I'm sorry, I am one of them, but I get more excited about the scripts than playing it self), but recently my harddrive has gone and ...
3
votes
2answers
790 views

Is there a drawback when using a chroot in high performance computing?

My (small) company uses an out-of-date linux (centos) software stack to run a proprietary software on a small cluster. Understandingly, IT is reluctant to upgrade since everything works now. I'd like ...
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1answer
975 views

How do I make a multi-threaded app use all the cores on Ubuntu under VMWare?

I have a multi-threaded C++ app (using pThreads) that processes a massive flat file that works great on Windows - uses all four cores on my puny CPU. Client wants to run the same code on Red Hat on a ...
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4answers
3k views

Why is Linux commonly used as operating system for supercomputers?

As of november 2010, Linux is used on 459 out of the 500 supercomputers of the TOP500. What are the reasons behind this massive use of Linux in the supercomputer space?