I need to count L2 cache misses (my cpu is i5-3550), so I downloaded last PAPI version. I followed instructions contained in the archive to install it (./configure, make and make install) and it worked. The only problem is that it seems it cannot access performace monitoring counters,in fact in the INSTALL.txt it says: "Kernel needs some modifications to provide PAPI access to the performance monitoring counters." Is it really necessary? If so, can you guide me step by step?
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More generic howto: askubuntu.com/questions/821439/… – Ciro Santilli新疆棉花TRUMP BAN BAD Aug 20 '17 at 18:17
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To install PAPI
Step 1: sudo apt-get update
Step 2: sudo apt-get install papi-tools
To Remove PAPI
Step 1: sudo apt-get remove papi-tools
To Completely removing papi-tools with all configuration files
Step 1 : sudo apt-get purge papi-tools
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So don't I need to download any archive or recall any lib folder while compiling my C program? – Generoso Jul 23 '17 at 11:33
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@Generoso You are not compiling. APT downloads and installs a .deb package from the repositories. – user692175 Jul 23 '17 at 16:29
