PDF-Optimization of MPI Collective Comm unication on BlueG

ibmcom Char les Archer IBM Systems and echnology Group Rochester MN 55901 archercus ibmcom Chr is Erw Dept of Comp Sci Bro wn Univ ersity Pro vidence RI 02912 ccecs bro wnedu Philip Heidelberger IBM atson Research Center or kto wn Heights NY 10598 ph. Ticket #273. Introduction. I/O is . one . of the main bottlenecks in HPC applications.. Many applications or higher level libraries rely on MPI-I/O for doing parallel I/O.. Several optimizations have been introduced in MPI-I/O to meet the needs of application. Junchao. Zhang. Argonne National Laboratory. jczhang@anl.gov. Pavan Balaji. Argonne National Laboratory. balaji@anl.gov. Ken . Raffenetti. Argonne National Laboratory. raffenet@anl.gov. Bill. . Long. Fault Tolerance Working Group. September 2013, MPI Forum Meeting. Madrid, Spain. Motivation. (Same as MPI has always been). Allow wide range of fault tolerance techniques. Introduce minimal changes to MPI. and callbacks. Rules and Behaviors. Background. Keyvals. are used for caching attributes on {COMM,TYPE,WIN} objects. Discussion will focus on COMM functions for convenience. APIs:. MPI_Comm_create_keyval. Pavan Balaji. 1. , Darius Buntinas. 1. , David Goodell. 1. , William Gropp. 2. , and Rajeev Thakur. 1. 1 . Argonne National Laboratory. 2 . University of Illinois at Urbana-Champaign. 2. Motivation. Multicore processors are ubiquitous. 3/ 25 PACX-MPI LA-MPI 4/ 25 Open MPI Code Structure Operating system OMPI 6/ 25 Open Message Passing Interface User application MPI API MPI Component Architecture (MCA) Allocator Shared Mem. Infiband. Windows HPC 2008.  Sean . Mortazavi. Architect. Microsoft Corporation.  Jeff Baxter. Software Developer. Microsoft Corporation. ES13. What is High Performance Computing?. Windows HPC product overview & demo. Minaashi Kalyanaraman . Pragya . Upreti. CSS 534 Parallel Programming. OVERVIEW. Fault Tolerance in MPI. Levels of survival in MPI. Approaches to . f. ault tolerance in MPI. Advantages & disadvantages of implementing fault tolerance in MPI. MPI and C-Language Seminars 2010. Seminar Plan. Week 1 – Introduction, Data Types, Control Flow, Pointers. Week 2 – Arrays, Structures, . Enums. , I/O, Memory. Week 3 – Compiler Options and Debugging. File Management I/O. Peter Collins, Khadouj Fikry. MPI IO. File Management I/O. Overview. Problem Statement: as the size of data is excessively increasing, the need of I/O parallelization is becoming a necessity to avoid scalability bottleneck on almost every application. . By Using MPI on . . EumedGrid. . Abdallah. ISSA . Mazen. TOUMEH . Higher . Institute for Applied Sciences and . Technology-HIAST. . Damascus – Syria. Africa . James . Dinan. , . Pavan. . Balaji. , Jeff Hammond,. Sriram. . Krishnamoorthy. , and . Vinod. . Tipparaju. Presented by: James . Dinan. James Wallace Gives Postdoctoral Fellow. Argonne National Laboratory. Boston University. Scientific Computing and Visualization. First log . on . to PC with . your BU userid and Kerboros . password . If you don’t have BU userid, then use this:. userid: . tuta1 . . . tuta18 . 2. Last Time…. We covered:. What is MPI (and the implementations of it)?. Startup & Finalize. Basic Send & Receive. Communicators. Collectives. Datatypes. 3. Basic Send/. Recv. 8. 19. 23. Process1.