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SUMMARY MPI is commonly used to write parallel programs for distributed memory parallel computers. MPI-CHECK is a tool developed to aid in the debugging of MPI programs that are written in free or fixed format Fortran 90 and Fortran 77. MPI-CHECK provides automatic compile-time and run-time checking of MPI programs. MPI-CHECK automatically detects the(More)
Fish were collected from 16 sites on rivers in the Columbia River Basin (CRB) from September 1997 to April 1998 to document temporal and spatial trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. Sites were located on the mainstem of the Columbia River and on the Snake, Willamette, Yakima, Salmon, and(More)
We collected, examined, and analyzed 368 fish of seven species from 10 sites on rivers of the Rio Grande Basin (RGB) during late 1997 and early 1998 to document temporal and geographic trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. Sites were located on the mainstem of the Rio Grande and on the(More)
Largemouth bass (Micropterus salmoides) and common carp (Cyprinus carpio) were collected from 13 sites located in the Mobile (MRB), Apalachicola-Flint-Chattahoochee (ARB), Savannah (SRB), and Pee Dee (PRB) River Basins to document spatial trends in accumulative chemical contaminants, health indicators, and reproductive biomarkers. Organochlorine residues,(More)
The Message Passing Interface (MPI) is commonly used to write parallel programs for distributed memory parallel computers. MPI-CHECK is a tool developed to aid in the debugging of MPI programs that are written in free or fixed format Fortran 90 and Fortran 77. This paper presents the methods used in MPI-CHECK 2.0 to detect many situations where actual and(More)
Common carp (Cyprinus carpio), black bass (Micropterus spp.), and channel catfish (Ictalurus punctatus) were collected from 14 sites in the Colorado River Basin (CRB) to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8-tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ),(More)
and Pee Dee River Basins (green) and stations sampled during this study (orange). Shown in gray are the major river basins and stations in the United States sampled during Biomonitoring of Environmental Status and Trends (BEST) investigations. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the(More)
This study was conducted to evaluate relative communication performance of the Cray T3E-900, the Cray Origin 2000 and the IBM P2SC on a collection of 13 communication tests. These tests call MPI routines using 2 to 64 processors with messages varying from 8 bytes to 10 MBytes. The relative performance of these machines varied depending on the communication(More)
This paper presents relative scalability results for the Cray T3E-600 and the Cray Origin 2000 on ve communication tests for a variety of message sizes and for 4, 8, 12, ..., 128 processors. The ve communication tests where chosen to represent commonly-used communication patterns with low contention (accessing distant messages, a right shift and a binary(More)
This paper presents scalability and communication performance results for a cluster of PCs running Linux with the GM communication library, a cluster of PCs running Windows NT with the HPVM communication library, a Cray T3E-600, an IBM SP and a Cray Origin 2000. Both PC clusters were using a Myrinet network. Six communication tests using MPI routines were(More)