I have a problem compiling FMU's in Jmodelica. for a medium size model I get the following error.
I already chanded the runtime parameter of JAVA in control panel and also tired setting the JVM allocated memory as high as possible using Xmx command. I'm running it on a pc with 128GB RAM.
Does anyone know how can I solve this issue in Jmodelica?
The JVM that is being used from JModelica does not take into account the system settings for the JAVA runtime parameter. You'll need to set it in the compile_fmu command. I.e.
compile_fmu(...., jvm_args="-Xmx10g")
Related
I have a Quarkus application that transforms large sets of data. At some point I always get an Out Of Memory Exception. I think when I am running the application in "Java Mode" the JVM xmx flag should work to give Quarkus more memory. Is that correct?
How can I set the memory of the application when running as native image?
When running the native binary, -Xmx is used the same way as in JVM mode.
See this for more details.
I've seen a few people encounter this issue with the heap size, which seems to be the issue in my case:
2> Could not reserve enough space for 1048576KB object heap (TaskId:336)
I tried manually setting it to 1G:
Got the same error, realised the space required is actually greater than 1G (it's about 1.04GB), so I set it to 2G. But this just escalated the error:
1> Could not reserve enough space for 2097152KB object heap (TaskId:305)
I thought I'd go nuclear and just set it to 10G, but then I got a different error saying it failed to create the Java VM.
In all honesty, I don't actually know what these mean, I'm just following along based on research of other SO and Xamarin Forums posts. Can anyone explain to me why I'm seeing these errors and how I can fix them?
Notes based on other questions: It's on debug, not release, and I don't have ProGuard ticked.
Steps to fix:
Select 64-bit Java SDK (as per instructions)
Set heap size to 5G (as per screenshot in question)
Built and ran successfully after this.
I am trying to install elastic search in Linux VM but could not able to start the service though it has java installed. I am getting following message while elasticsearch script runs.
[xxxx#ABCWCW0ASMGNJ01A bin]$ java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (novell-2.5.1.2.el6_5-x86_64 u65-b17)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
[xxxx#ABCWCW0ASMGNJ01A bin]$ ./elasticsearch
Error occurred during initialization of VM
Too small initial heap for new size specified
I have downlaoded 2.3.2 from elastic search website. After initial google I did set the ES_HEAP_SIZE=1g in bash_profile but still no luck. Can you thow some light what could be issue.
Thanks
It seems you don't have enough heap space to start elastic. Please go to increase the java heap size permanently? and do the needful.
Depending on the flavor of Linux you are using, you may need to use a text editor to update the following file to increase the heap size.
/etc/sysconfig/elasticsearch
(uncomment the line 'ES_HEAP_SIZE=' and set this to half of the allocated virtual RAM for the VM)--Based on: https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html
I will caution you to read this as well afterwards if you see something like "Unable to lock JVM memory" in your elasticsearch application log after starting it up:
https://github.com/elastic/elasticsearch/issues/9357
I ran into problems myself with trying to use the environment variable method on Centos 6 and 7.
You may also want to try using the Kopf plugin (open source) to get some simple visibility:
https://github.com/lmenezes/elasticsearch-kopf
Using the following general instructions of course:
https://www.elastic.co/guide/en/elasticsearch/plugins/current/installation.html
If you don't know where certain things are located for elasticsearch on your system, please use the below defaults listing as guidance:
https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-dir-layout.html
The root cause of the problem you are experiencing is most likely related to the startup script being used to bring up your instance of elasticsearch on the VM and it not utilizing the environment variable as expected. I hope you don't mind the extra information, I'm just trying to help you save some time.
I'm after a bit of info on how JWrapper uses memory on the client. We've got a 3rd party app that we're running through JWrapper. Before moving to JWrapper we had issues with memory leaks so we previously set the runtime memory parameter to Xmx256m in the deployment file. Can I specify how much memory to use in JWrapper?
I genuinely have tried to find this out myself but I can't find anything on the web. I didn't have any choice about getting JWrapper; it just happened to me one day hence I haven't really got much of an idea about it.
Thanks, :)
You can set the jvm options in your jwrapper XML config file including -Xmx256m etc, the following sample XML file has an example -Xmx option:
http://www.jwrapper.com/sample-app-xml.html
On launching Jmeter, getting below error:
Error occurred during initialization of VM Could not reserve enough space for object heap errorlevel=1.
Please help me to resolve this. I am using laptop with 4GB RAM, 64-bit OS, intel i-5 core.
There could be a lot of processes running in your laptop. That is why you get this error.
Stop all the unwanted programs.
Check the HEAP size setting in JMeter.bat file. Reduce it (128, 512, 1024..)
You need to do the following.
Go to JMETER_HOME/bin folder
Open "jmeter.bat" (assuming you are using windows)
Check "set HEAP=-Xms512m -Xmx512m" (check the heap size- change accordingly)
Update, Close and Relaunch JMeter
You might need more heap for simulating more load.