<div dir="ltr">Dear all,<div>I am currently testing my new machine, which is a cluster <span style="font-family: ArialNarrow; font-size: 12pt;">2 Supermicro 2048U RT4 nodes with </span><span style="font-family: ArialNarrow; font-size: 12pt;">4x2.6GHZ Intel Broadwell 10Core CPUs.</span></div><div><span style="font-family: ArialNarrow; font-size: 12pt;">The point is that in order to check the scalability and the performances of the machine with 40 processors, I run several single point calculations of the same structure both with CP2K version 4.1 </span><font face="ArialNarrow" size="3">ssmp and Quantum Espresso 5.1.1 </font></div><div><font face="ArialNarrow" size="3">It turns out that for the time spent by CP2K to converge a single point calculation with 40 processors, for a system of 256 atoms, was of the order of 13316.63 seconds (taken from the output in the TIMING BLOCK in the end of the output file [TOTAL TIME AVERAGE); whereas for the QE, the same calculation, with the same system ect. took just 1845.76 seconds. </font></div><div><font face="ArialNarrow" size="3">So, because we strongly want to work with CP2K, also for running some dynamics and exploit its scalability, may i ask you to kindly check if the input file of the CP2K I used is properly set? I am more expert in QE rather than CP2K, so I might have miss something essential.</font></div><div><font face="ArialNarrow" size="3"><br></font></div><div><font face="ArialNarrow" size="3">For matter of comparison I attached the two input files used, one for the CP2K and the other of the QE.</font></div><div><br></div><div><font face="ArialNarrow" size="3">Thanks in advance for the kind help!</font></div>
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<p><span style="font-family: ArialNarrow; font-size: 12pt;">Best Regards,</span></p><p><span style="font-family: ArialNarrow; font-size: 12pt;">Tommaso</span><span style="font-family: ArialNarrow; font-size: 12pt; font-weight: 700;"> </span></p><p><span style="font-family: ArialNarrow; font-size: 12pt; font-weight: 700;"><br></span></p><p><span style="font-family: ArialNarrow; font-size: 12pt; font-weight: 700;"><br></span></p><p><span style="font-family: ArialNarrow; font-size: 12pt; font-weight: 700;"><br></span></p>
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