lustre | Instructions for building , configuring and running Lustre | Emulator library

by whamcloud C Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | lustre Summary

lustre is a C library typically used in Utilities, Emulator applications. lustre has no bugs, it has no vulnerabilities and it has low support. However lustre has a Non-SPDX License. You can download it from GitHub.

Instructions for building, configuring and running Lustre: and Instructions for contributing patches for Lustre: and The Lustre Coding Style Guidelines can be found at: The Lustre Test Script Style Guidelines can be found at:

Support

Quality

Security

License

Reuse

Support

lustre has a low active ecosystem.

It has 9 star(s) with 6 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

lustre has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of lustre is current.

Quality

lustre has no bugs reported.

Security

lustre has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

lustre has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

lustre releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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lustre Key Features

No Key Features are available at this moment for lustre.

lustre Examples and Code Snippets

No Code Snippets are available at this moment for lustre.

Community Discussions

Trending Discussions on lustre

Mounting Lustre Inside Running Container Not Working (Have Added All Capabilities)

python multiprocess using map, but with one sub-process running

XSLT: Problem with the element

Need test to determine if asynchronous I/O is actually happening in C code

why "locate" doesn't return all existing files?

If statement to replace something in ECHO

How to print just the file name when looping through all files of a directory

After installing a program using opam, how do I run it?

Dataproc: Hot data on HDFS, cold data on Cloud Storage?

Why did I get UnicodeDecodeError when I read a file which contains Chinese characters?

QUESTION

Mounting Lustre Inside Running Container Not Working (Have Added All Capabilities)

Asked 2021-Feb-23 at 21:14

We are trying to mount lustre filesystem inside running container, and have successfully done this via containers which are running in priviledged mode.

However for those containers which are running in non-privilidged mode, mounting lustre failed, even if all capabilites linux provides -- tens of capabilities -- were included!

Then

what is difference between "priviledged: True" and "cap_add: all capabilites"?
Why mounting lustre still fails when all capabilities were added to the container?

Mount Error

Non-Privileged Mode Container:

...

ANSWER

Answered 2021-Feb-22 at 23:33

Have you tried apparmor:unconfined?

Source https://stackoverflow.com/questions/66254935

QUESTION

python multiprocess using map, but with one sub-process running

Asked 2021-Feb-22 at 17:06

I am new to python map() function to achieve parallel code.

...

ANSWER

Answered 2021-Feb-22 at 17:06

This is only an educated guess since I do not know enough about the size of sample and the details of the work being performed by your worker function, main_function

Lets assume that the iterable, sample, that you are passing to the Pool.map method has length 70 and as you said your pool size is 5. The map method will break up the 70 tasks into chunksize-sized groups of tasks distributing these chunks to each of the 5 processes in the pool. If you do not specify the chunksize argument to the map method it computes the value based on the size of the iterable (70) and the size of the pool (5) as follows:

Source https://stackoverflow.com/questions/66310439

QUESTION

XSLT: Problem with the element

Asked 2020-Dec-13 at 20:23

I've recently started to work with XML and XSLT and I've encountered a problem that I'm having trouble solving.

I have a project in which I need to create an XSLT that works with 3 different objects in XML.

The objects are expositions.

Full XML (sorry it's not in English, it's quite big to translate and for the sake of keeping the elements name equal I'll keep it as the original version):

...

ANSWER

Answered 2020-Dec-13 at 20:23

EDIT:

The below may work for you.

Source https://stackoverflow.com/questions/65259989

QUESTION

Need test to determine if asynchronous I/O is actually happening in C code

Asked 2020-Dec-01 at 22:18

I am new to asynchronous I/O. I need to get it working in some C and Fortran programs on a Linux system. I managed to write a little C test code (included below) that reads asynchronously from two files. The code compiled and ran. What I am wondering, though, is whether I am truly getting asynchronous I/O, or is the I/O really serial? The lustre file system I am dealing with is a bit outdated and it is not clear that it actually supports asynchronous I/O, and no one seems to have a definite answer. So I am wondering are there some timing statements or any kind of output I can add to the code to determine whether it is functioning in a truly asynchronous manner. I'm betting I'll need much larger files than what I am dealing with to do a meaningful test. No idea what else I need.

The code is:

...

ANSWER

Answered 2020-Dec-01 at 22:18

From man aio, note that aio_* is wholly a glibc [userspace] implementation.

So, as mentioned, it has some limitations.

The way to see what's going on, timewise, is to have an event log with timestamps.

The naive approach is to just use [debug] printf calls. But, for precision time measurements, the overhead of printf can disrupt the real/actual timing. That is, we don't measure "the system under test", but, rather, "the system under test + the timing/benchmark overhead".

One way is to run your program under strace with appropriate timestamp options. The strace log will have information about the syscalls used. But, because aio is implemented in userspace, it may not be able to drill down to a fine enough grain. And, strace itself can impose an overhead.

Another way is to create a trace/event log mechanism and instrument your code. Basically, it implements a fixed length ring queue of "trace elements". So, the trace data is stored in memory, so it's very fast.

A standard utility that can help with this is dtrace. I've not done this myself, as I've preferred to "roll my own". See below for some actual code I've used.

Then, instrument your code with (e.g.):

Source https://stackoverflow.com/questions/65098182

QUESTION

why "locate" doesn't return all existing files?

Asked 2020-Oct-30 at 16:16

I wonder why locate doesn't file all .exe files on my system depsite being up to date:

...

ANSWER

Answered 2020-Oct-30 at 16:16

Since your current (home) directory has a file named a.exe , the shell is expanding *.exe, and you are effectively running the command

$ locate a.exe

Try it either without the asterisk or with an escaped asterisk

$ locate \*.exe

Source https://stackoverflow.com/questions/64611783

QUESTION

If statement to replace something in ECHO

Asked 2020-Jul-14 at 01:26

while ($rows=sqlsrv_fetch_array($stmt))
{
    $autoincrement++;

    if ($rows[1] == 'ACROBAT')
    {
        $rows[1] = ' '.$rows[1].' ';
    }

    if ($rows[1] == 'PRIEST')
    {
        $rows[1] = ' '.$rows[1].' ';
    }

    if ($rows[1] == 'SWORDMASTER')
    {
        $rows[1] = ' '.$rows[1].' ';
    }

    if ($rows[1] == 'MERCENARY')
    {
        $rows[1] = ' '.$rows[1].' ';
    }

    if ($rows[1] == 'ALCHEMIST')
    {
        $rows[1] = ' '.$rows[1].' ';
    }
    
echo 
'

 '.$autoincrement.' 
   '.$rows[0].'   
 '.$rows[1].'
 '.$rows[2].' 


';  

}

...

ANSWER

Answered 2020-Jul-14 at 01:26

Answer is that you are not able to change SQL results through an associative array. The way to get my desired result was to fix up the SQL query itself and display the image through the database.

Source https://stackoverflow.com/questions/62826238

QUESTION

How to print just the file name when looping through all files of a directory

Asked 2020-Apr-22 at 13:17

Imagine there are these 3 subdirectories inside my directory:

...

ANSWER

Answered 2020-Apr-22 at 12:15

This is a quick solution that I've been able to come up with

Source https://stackoverflow.com/questions/61364584

QUESTION

After installing a program using opam, how do I run it?

Asked 2020-Mar-19 at 23:04

I successfully installed a program using opam: opam install lustre-v6. But how to run it? I stupidly tried lv6, opam lv6, ocaml lv6, opam lustre-v6, opam run lustre-v6, ocaml lustre-v6, etc., to no avail.

...

ANSWER

Answered 2020-Mar-19 at 09:49

From the documentations:

lv6 edge.lus

http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/reactive-toolbox/#org234ffeb

Source https://stackoverflow.com/questions/60754534

QUESTION

Dataproc: Hot data on HDFS, cold data on Cloud Storage?

Asked 2020-Mar-10 at 22:02

I am studying for the Professional Data Engineer and I wonder what is the "Google recommended best practice" for hot data on Dataproc (given that costs are no concern)?

If cost is a concern then I found a recommendation to have all data in Cloud Storage because it is cheaper.

Can a mechanism be set up, such that all data is on Cloud Storage and recent data is cached on HDFS automatically? Something like AWS does with FSx/Lustre and S3.

...

ANSWER

Answered 2020-Mar-09 at 22:20

What to store in HDFS and what to store in GCS is a case-dependant question. Dataproc supports running hadoop or spark jobs on GCS with GCS connector, which makes Cloud Storage HDFS compatible without performance losses.

Cloud Storage connector is installed by default on all Dataproc cluster nodes and it's available on both Spark and PySpark environments.

Source https://stackoverflow.com/questions/60607667

QUESTION

Why did I get UnicodeDecodeError when I read a file which contains Chinese characters?

Asked 2020-Feb-12 at 06:21

>>> path = 'name.txt'
>>> content = None
>>> with open(path, 'r') as file:
...     content = file.readlines()
... 
Traceback (most recent call last):
  File "", line 2, in 
  File "/mnt/lustre/share/miniconda3/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 163: ordinal not in range(128)

...

ANSWER

Answered 2020-Feb-12 at 06:18

open is using the ASCII codec to try to read the file. The easiest way to fix this is to specify the encoding:

Source https://stackoverflow.com/questions/60182022

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install lustre

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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