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Note that the checkpoint file size will scale as the number of elements in your
<div>problem (i.e., the number of elements in the .rea file: grep -i nel eddy_uv.rea to see this).</div>
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<div>The checkpoint file will not scale as lelt in the SIZE file.</div>
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<div>The requirement for lelt is that:</div>
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<div> P*lelt > nel</div>
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<div>where P is the number of processors used in the simulation.</div>
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<div>You also need the global number of elements, lelgt > nel.</div>
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<div id="divRpF11478" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> nek5000-users-bounces@lists.mcs.anl.gov [nek5000-users-bounces@lists.mcs.anl.gov] on behalf of nek5000-users@lists.mcs.anl.gov [nek5000-users@lists.mcs.anl.gov]<br>
<b>Sent:</b> Monday, February 20, 2017 11:46 PM<br>
<b>To:</b> nek5000-users@lists.mcs.anl.gov<br>
<b>Subject:</b> [Nek5000-users] Increase nek5000 problem size<br>
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<p>Hi,</p>
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<p>I'm new to use nek5000, I have a problem about checkpoint file size. I did test for eddy and set like <span style="font-size:12pt">1x1=12, 1xd=18, lelt=3000, checkpoint file size is 0.7 MB, it seems very small, If I continue increase memory size, I cannot
compile nek5000 correctly, I will get an error like bellow:</span></p>
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<div>obj/bdry.o: In function `trstax_':</div>
<div>bdry.f:(.text+0x10f6): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>bdry.f:(.text+0x14f4): relocation truncated to fit: R_X86_64_PC32 against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>bdry.f:(.text+0x15c7): relocation truncated to fit: R_X86_64_PC32 against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>bdry.f:(.text+0x1793): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>obj/bdry.o: In function `nekasgn_':</div>
<div>bdry.f:(.text+0x20d7): relocation truncated to fit: R_X86_64_32S against symbol `screv_' defined in COMMON section in obj/postpro.o</div>
<div>bdry.f:(.text+0x20e8): relocation truncated to fit: R_X86_64_32S against symbol `screv_' defined in COMMON section in obj/postpro.o</div>
<div>obj/coef.o: In function `area3_':</div>
<div>coef.f:(.text+0x417): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>coef.f:(.text+0x46f): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>coef.f:(.text+0x477): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>coef.f:(.text+0x682): relocation truncated to fit: R_X86_64_32S against symbol `ctmp0_' defined in COMMON section in obj/navier5.o</div>
<div>coef.f:(.text+0x6ef): additional relocation overflows omitted from the output</div>
<p></p>
<p><span style="font-size:12pt">I already set </span></p>
<div># enable BIG MEMORY suuport </div>
<div>BIGMEM="true"</div>
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<div>So, if there any other way to to increase problem size? Thanks.</div>
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<div>Best,</div>
<div>Kai</div>
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