Table 1: Comparison of Ray instances with MPI ranks and mini-ranks.

Table 1: Comparison of Ray instances with MPI ranks and mini-ranks.

Metric	Ray with MPI ranks	Ray with mini-ranks
Accession	SRA010766	SRA010766
Description	Jay T. Flatley genome	Jay T. Flatley genome
Input files	164	164
Input sequences	1593032322	1593032322
Compression	Bzip2	Bzip2
K-mer length	21	21
MPI implementation	Open-MPI 1.6.2	Open-MPI 1.6.2
Compiler	GNU g++ 4.7.0	GNU g++ 4.7.0
Ray version	2.1.0-pre-release	2.1.1-devel (9cbf2a8277)
RayPlatform version	1.1.0-pre-release	7.0.0-devel (7e38d17e0f)
Interconnect	Mellanox MT26428	Mellanox MT26428
Processor	AMD Opteron 6172	AMD Opteron 6172
Machines	43	100
MPI ranks per machine	23 or 24	1
MPI ranks	1024	100
Mini-ranks per MPI rank	None	23
Mini-ranks	None	2300
Messaging strategy	Virtual routing with polytope	None
Routing graph	Polytope	None
Routing graph degree	62	None
Network testing	00:00:20	00:00:03
Counting sequences to assemble	00:13:45	00:10:34
Sequence loading	00:45:01	00:30:09
K-mer counting	02:55:18	00:11:44
Coverage distribution analysis	00:00:22	00:00:08
Graph construction	00:22:33	00:17:04
Null edge purging	00:20:25	00:19:49