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QUESTION
This problem occurred when I used chipyard to compile Boom. Is this because of insufficient memory? I am running on a 1 core 2G cloud server.
/bin/bash: line 1: 9986 Killed java -Xmx8G -Xss8M -XX:MaxPermSize=256M -jar /home/cuiyujie/workspace/Boom/chipyard/generators/rocket-chip/sbt-launch.jar -Dsbt.sourcemode=true -Dsbt.workspace=/home/cuiyujie/workspace/Boom/chipyard/tools ";project utilities; runMain utilities.GenerateSimFiles -td /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig -sim verilator" /home/cuiyujie/workspace/Boom/chipyard/common.mk:86: recipe for target '/home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/sim_files.f' failed make: *** [/home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/sim_files.f] Error 137
When I adjusted the memory to 4G, this appeared.
Done elaborating. OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000006dc3b7000, 97148928, 0) failed; error='Cannot allocate memory' (errno=12)
There is insufficient memory for the Java Runtime Environment to continue. Native memory allocation (mmap) failed to map 97148928 bytes for committing reserved memory. An error report file with more information is saved as: /home/cuiyujie/workspace/Boom/chipyard/hs_err_pid2876.log /home/cuiyujie/workspace/Boom/chipyard/common.mk:97: recipe for target 'generator_temp' failed make: *** [generator_temp] Error 1
Should I adjust to 8G memory, or through what command to increase the memory size that the process can use?
When I adjusted the memory to 16G, this appeared.
.../bin/bash: line 1: 2642 Killed java -Xmx8G -Xss8M -XX:MaxPermSize=256M -jar /home/cuiyujie/workspace/Boom/chipyard/generators/rocket-chip/sbt-launch.jar -Dsbt.sourcemode=true -Dsbt.workspace=/home/cuiyujie/workspace/Boom/chipyard/tools ";project tapeout; runMain barstools.tapeout.transforms.GenerateTopAndHarness -o /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.top.v -tho /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.harness.v -i /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.fir --syn-top ChipTop --harness-top TestHarness -faf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.anno.json -tsaof /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.top.anno.json -tdf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/firrtl_black_box_resource_files.top.f -tsf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.top.fir -thaof /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.harness.anno.json -hdf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/firrtl_black_box_resource_files.harness.f -thf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.harness.fir --infer-rw --repl-seq-mem -c:TestHarness:-o:/home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.top.mems.conf -thconf /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig/chipyard.TestHarness.LargeBoomConfig.harness.mems.conf -td /home/cuiyujie/workspace/Boom/chipyard/sims/verilator/generated-src/chipyard.TestHarness.LargeBoomConfig -ll error" /home/cuiyujie/workspace/Boom/chipyard/common.mk:123: recipe for target 'firrtl_temp' failed make: *** [firrtl_temp] Error 137
ANSWER
Answered 2021-Mar-09 at 03:23Short anwer : yes
Error 137
is thrown when your host runs out of memory.
"I am running on a 1 core 2G cloud server"
When you try to assign 8GB to the JVM, OOM-Killer
says "no-no, f... no way", and kicks in sending a SIGKILL
; This Killer is a proactive process that jumps in to save the system when its memory level goes too low, by killing the resource-abusive processes.
In this case, the abusive process (very abusive, indeed) is your java program, which is trying to allocate more than(*) 4 times the maximum avaliable memory in your host.
QUESTION
For example, my computer has two monitors, the primary monitor's resolution is 800*600, the other monitor's resolution is 1600*900.
I would like define the resolution on one monitor only ?
The function 'SetDisplayConfig' change the resolution screen on the two minotors...
https://docs.microsoft.com/fr-fr/windows-hardware/drivers/display/ccd-apis https://docs.microsoft.com/fr-fr/windows/win32/api/winuser/nf-winuser-setdisplayconfig
...ANSWER
Answered 2020-Feb-26 at 03:17Use ChangeDisplaySettingsEx
function to change the settings of the specified display device to the specified graphics mode. The following is an example you can refer to.
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