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In the second article of this three-part series, we look at simple write examples in Fortran 90 and track the output with strace to see how it affects I/O patterns and performance. ... common in HPC to illustrate these differences: C, Fortran 90, and Python (2.x series). I run the examples on a single 64-bit system with CentOS 6.2 using the default GCC compilers, GCC and GFortran (4 ... In the second article of this three-part series, we look at simple write examples in Fortran 90 and track the output with strace to see how it affects I/O patterns and performance. ... Tuning I/O Patterns in Fortran 90

Rubén Llorente ... with IP address 192.168.90.55, it will cast an ARP request into the void asking, "Who has IP address 192.168.90.55?" Ideally, the target machine will send an ARP reply, "I have IP address 192.168.90.55," so

't connect to $remote_host:$remote_port: $@ \n"; 17 18 19 while() { 20 my @lavg = Sys::CpuLoad::load(); 21 my $ts=time(); 22 print $socket "system.loadavg_1min $lavg[0] $ts\n"; 23 print $socket "system ... 22

.lookupByID(id) 21 print "System " + dom.name() + " is UP." 22 23 # List inactive Hosts 24 for name in conn.listDefinedDomains(): 25 dom = conn.lookupByName(name) 26 print "System " + dom ... 22

MIPS : 1993.93 17 processor : 2 18 BogoMIPS : 1993.93 19 processor : 3 20 BogoMIPS : 1993.93 21 Features : swp half thumb fastmult vfp edsp neon vfpv3 tls 22 CPU implementer : 0 ... 22

mapper.accountinfo = MONITORED.Monitored PURPOSE.Webserver 21 22 ### CATEGORIES ### 23 mapper.categoryMap = categorymap.properties The ocs.accountinfo parameter specifies that only OCS computers ... 22

of mountpoints, sockets, and the process start time; cat /proc/1234/stat (e.g., for a process with an ID of 1234 in field 22) unveils the start time. On the Network CRIU freezes programs that communicate over ... 22

http://ffnet.sourceforge.net Disco Framework for distributed computing based on the MapReduce paradigm http://discoproject.org Hadoopy [22] Wrapper for Hadoop using ... 22