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http://hecura.cs.unm.edu/ 2008-12-11T13:52:41+01:00 http://hecura.cs.unm.edu/ http://hecura.cs.unm.edu/lib/images/favicon.ico text/html 2008-12-11T09:24:00+01:00 http://hecura.cs.unm.edu/doku.php/asynchronous_i_o_api?rev=1229012640 ADaptable IO System (ADIOS) initially developed at ORNL by Jay Lofstead and Scott Klasky, Summer 2007 This was built on work previously done by Hasan Abbasi, Karsten Schwan, and Matt Wolf (GT) - PBIO portals & infiniband Ciprian Docan, Manish... text/html 2008-12-10T13:35:02+01:00 http://hecura.cs.unm.edu/doku.php/chunking_metabot_design_doc?rev=1228941302 Chunking metabot design notes (”reverse engineered” the metabot to figure out what can be assigned to MC) Overview of metabot’s execution steps: metabot begins execution at any time (before, during, or after the writing app&rsquo... text/html 2007-10-29T14:25:21+01:00 http://hecura.cs.unm.edu/doku.php/gtc_visualization_for_sc?rev=1193689521 Hi, I have attached a closeup picture of some of the older data from the GTC code (actually GTC_S, but the only difference is the shape; one is circular, the other has this funny shape). You can see the mesh structure per plane, and by looking at t... text/html 2007-12-07T06:28:15+01:00 http://hecura.cs.unm.edu/doku.php/iograph_metabot_ideas_from_m3d_cpes_meeting_12_5_07?rev=1197034095 I had a chance to talk with Linda Sugiyama (MIT), the physicist in charge of the M3D fusion plasmas code, while at the CPES meeting. I explained what we were trying to do and she had some suggestions for examples of the kinds of things that would he... text/html 2007-11-20T18:00:15+01:00 http://hecura.cs.unm.edu/doku.php/mesh_creation_example_code?rev=1195606815 /* This module will connect points together in a mesh */ #include "express.h" #include "math.h" #include <stdio.h> #include <stdlib.h> #define DEBUG 0 // the tricky part is to define the subset. // if we have 48 plane... text/html 2008-12-10T13:25:15+01:00 http://hecura.cs.unm.edu/doku.php/metabot_controller_api?rev=1228940715 Simplest! METABOT CONTROLLER API (where mailbox is a simple file) API between MC and Mailbox Metabot Controller to Mailbox: - read from mailbox (as much at one time as possible) (Assuming that, for simplest case, MC is executed after apps ... text/html 2007-08-27T12:35:13+01:00 http://hecura.cs.unm.edu/doku.php/metabot_ideas?rev=1188239713 Ideas for Metabots of all sorts. Please feel free to add/comment on ideas, of all sorts. Directory Reconstruction Off-line Checkpoint Reorganization Data reorganization to optimize access patterns Postprocessing Data slicing (bounding boxes,... text/html 2008-12-11T09:13:35+01:00 http://hecura.cs.unm.edu/doku.php/metabot_microbenchmarks?rev=1229012015 This experiment seeks to demonstrate how assigning file system metadata creation to out-of-band metabots can improve in-band performance of the application. In situations where applications have to create large file hierarchies, which are accessed a... text/html 2007-02-13T15:03:16+01:00 http://hecura.cs.unm.edu/doku.php/metabots?rev=1171404196 Initial write-up of concepts: file here when wiki is fixed ... text/html 2007-08-29T11:42:24+01:00 http://hecura.cs.unm.edu/doku.php/ornl_summer_2007_internship?rev=1188409344 I got some good insights from Scott Klasky and others while I was there. It is probably a good idea to share these with the others on this list as they directly relate to our work. Scott can correct/amend these as he sees fit: To start with, watchin... text/html 2007-07-19T16:49:57+01:00 http://hecura.cs.unm.edu/doku.php/other_potential_ssds_applications?rev=1184885397 Some time ago, we got together with Terran Lane and Joe Kniss, faculty at UNM, to discuss potential SSDS collaborations we might explore. Joe Kniss Discussion centered on visualization for scientific applications projection, permutation, slicin... text/html 2008-09-16T14:55:51+01:00 http://hecura.cs.unm.edu/doku.php/rough_metabot_framework_ideas?rev=1221598551 Features Common to all metabots (probably incomplete and new uses for metabots may arise) 1. starting metabots when to start metabots: overlap with inline operations or wait until those are finished how do metabots know when to start 2. each me... text/html 2008-12-10T13:26:38+01:00 http://hecura.cs.unm.edu/doku.php/start?rev=1228940798 Data-intensive HPC applications are becoming increasingly important, adding substantial challenges to the already daunting input/output requirements of MPP codes. A well-known example is the interpretation of data from seismic exploration. In these ... text/html 2008-03-02T16:04:32+01:00 http://hecura.cs.unm.edu/doku.php/tagged_binary_format?rev=1204499072 Below is a description of the data format and possible entries. The enum values (all caps) are taken care of in the code. The datatypes are also specified in an enum. If you have access to AIO code, look at the files bw-utils.[ch], br-utils.[ch], bi... text/html 2007-08-06T11:24:20+01:00 http://hecura.cs.unm.edu/doku.php/upcoming_ornl_big-science_projects?rev=1186421060 Hi Karsten, Overall this looks like an excellent talk. Here is more information. 1. Between January - February 3 lucky applications will be chosen on the ORNL machines to do really BIG science. GTC and Chimera and S3D are the top 3 of these. For G...