Practical Parallelism in C++: MPI Basics

[@omanjabbar200]

What my teacher is yelling for the past two weeks this dude just explained in 11 minutes.

[@aldolunabueno2634]

Vocabulary
- MPI:
- rank:
- communicator:
- MPI_COMM_WORLD:
- size:
Commands in terminal (Linux distribution)
- Compile:
- Execute:
-----------------------------------------------------------------------------
Vocabulary
- MPI: Message Passing Interface
- rank: another word for process, and the number associated with each process.
- communicator: a group of process.
- MPI_COMM_WORLD: the default communicator.
- size: number of ranks.
Commands in terminal (Linux distribution)
- Compile: mipc++ .cpp
- Execute: mpirun -np ./

[@xealit]

People keep opposing MPI and "shared memory models like pthreads or OpenMP", but if MPI nodes run on the same computer, the MPI implementation may actually use _shared memory_ to carry the communication between them, right? It would be the same as DMA or RDMA.

[@kirillolkhovsky9160]

how do i include mpi.h in vs? I have found how to set it up as an project but i have only an cpp file and i want to compile the programm with makefile

[@ABigDoggy]

thank you. do more vids like these. 1 for each aspect of MPI. would be a great series. couple concrete examples with commented code. buonissimo amico!

[@marcelianooliveira1694]

Thanks Nick, Good Job!

[@T-She-Go]

So good. Thank you 🌸

[@yasahanzengin3329]

Great explanation, thanks!

[@scarlett8146]

Great stuff

[@solverproblem7609]

thank you, you save me

[@abdelrahmanfuad9999]

Thanks

[@gustavob.7957]

Good stuff!

[@NotesByNick]

Thanks! Glad you liked it!