Hi,
I am trying to apply data deduplication on DMTCP checkpoint process images for
mpi applications (mainly the the "ckpt_*.dmtcp" files).
I generate raw images (i.e. without compression by adding "--no-gzip" to
dmtcp_launch)
Each "ckpt_*.dmtcp" file contain the memory pages heap, stack and code region
allocated by a process.
My question is :
Does DMTCP tries to fill the gabs between valid memory pages by adding zeros in
between ?
This can be done in order to have a continues address space.
I can say the question in a different way
Are invalid memory pages are filled with zeros and saved inside the
"ckpt_*.dmtcp" file ?
I will be glad to answer my question and /or provide me to a link to a
publication that can answer this question.
Looking forward for your reply.
Best regards,
Ramy Gad
Johannes Gutenberg - Universität Mainz
Zentrums für Datenverarbeitung (ZDV)
Anselm-Franz-von-Bentzel-Weg 12
55128 Mainz
Germany
E-Mail: g...@uni-mainz.de<mailto:g...@uni-mainz.de>
Office Phone: +49-6131-39-26437
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