2019-05 PM workshops Korea and Japan

libpmemobj-cpp workshop

These are the materials used during the workshop:

• slides.pdf contains the slides shown
• Commands demonstrated during the workshop are listed below.
• Source files for programming examples are in this repo.

These instructions are designed to work on the workshop guest VMs. Start by cloning this repo, so you can easily cut and paste commands from this README into your shell. Many of the sys admin steps described here can be found in the Getting Started Guide on pmem.io: https://docs.pmem.io/getting-started-guide

Start by making a clone of this repo...

$ git clone https://github.com/pmemhackathon/2019-05
$ cd 2019-05

Compile examples.

$ make

export ${USER} variable for convenient copy-pasting commands

$ export USER=pmdkuser{1..100}

Warmup - a simple persistent counter.

$ pmempool create obj --layout=warmup -s 100M /mnt/pmem-fsdax0/${USER}/warmup
$ ./warmup /mnt/pmem-fsdax0/${USER}/warmup

find_bugs.cpp

Program which contains few bugs. Can you find them?

$ pmempool create obj --layout=find_bugs -s 100M /mnt/pmem-fsdax0/${USER}/find_bugs
$ ./find_bugs /mnt/pmem-fsdax0/${USER}/find_bugs

run find-bugs under pmemcheck

$ valgrind --tool=pmemcheck ./find_bugs /mnt/pmem-fsdax0/${USER}/find_bugs

queue.cpp

Simple implementation of a volatile queue.

$ ./queue
$ push 1
$ push 2
$ push 3
$ pop
$ show
$ exit

queue_pmemobj.cpp

Simple implementation of a persistent queue.

$ pmempool create obj --layout=queue -s 100M /mnt/pmem-fsdax0/${USER}/queue
$ pmempool info /mnt/pmem-fsdax0/${USER}/queue
$ ./queue_pmemobj /mnt/pmem-fsdax0/${USER}/queue
$ push 1
$ push 2
$ push 3
$ pop
$ show
$ exit

simplekv_simple.cpp

Hashmap test program.

$ pmempool create obj --layout=simplekv -s 100M /mnt/pmem-fsdax0/${USER}/simplekv-simple
$ pmempool info /mnt/pmem-fsdax0/${USER}/simplekv-simple
$ ./simplekv_simple /mnt/pmem-fsdax0/${USER}/simplekv-simple

simplekv_word_count.cpp

A C++ program which reads words to a simplekv hashtable and uses MapReduce to count words in specified text files.

$ pmempool create obj --layout=simplekv -s 100M /mnt/pmem-fsdax0/${USER}/simplekv-words
$ pmempool info /mnt/pmem-fsdax0/${USER}/simplekv-words
$ ./simplekv_word_count /mnt/pmem-fsdax0/${USER}/simplekv-words words1.txt words2.txt