Ahmad Afsahi

Publication Activity (10 Years)

Years Active: 1997-2023
Publications (10 Years): 20

Top Topics

Message Passing

Design Considerations

Graphics Processors

Top Venues

IPDPS Workshops

Parallel Comput.

Concurr. Comput. Pract. Exp.

Publications

Yiltan Hassan Temuçin, Scott Levy, Whit Schonbein, Ryan E. Grant, Ahmad Afsahi
A Dynamic Network-Native MPI Partitioned Aggregation Over InfiniBand Verbs. CLUSTER (2023)
Pedram Alizadeh, Amir Hossein Sojoodi, Yiltan Hassan Temuçin, Ahmad Afsahi
Efficient Process Arrival Pattern Aware Collective Communication for Deep Learning. EuroMPI (2022)
Yiltan Hassan Temuçin, Amir Hossein Sojoodi, Pedram Alizadeh, Benjamin Kitor, Ahmad Afsahi
Accelerating Deep Learning Using Interconnect-Aware UCX Communication for MPI Collectives. IEEE Micro 42 (2) (2022)
Yiltan Hassan Temuçin, Ryan E. Grant, Ahmad Afsahi
Micro-Benchmarking MPI Partitioned Point-to-Point Communication. ICPP (2022)
Yiltan Hassan Temuçin, Amir Hossein Sojoodi, Pedram Alizadeh, Ahmad Afsahi
Efficient Multi-Path NVLink/PCIe-Aware UCX based Collective Communication for Deep Learning. HOTI (2021)
S. Mahdieh Ghazimirsaeed, Seyed Hessam Mirsadeghi, Ahmad Afsahi
Communication-aware message matching in MPI. Concurr. Comput. Pract. Exp. 32 (3) (2020)
Matthew G. F. Dosanjh, Whit Schonbein, Ryan E. Grant, Patrick G. Bridges, S. Mahdieh Ghazimirsaeed, Ahmad Afsahi
Fuzzy Matching: Hardware Accelerated MPI Communication Middleware. CCGRID (2019)
S. Mahdieh Ghazimirsaeed, Ryan E. Grant, Ahmad Afsahi
A dynamic, unified design for dedicated message matching engines for collective and point-to-point communications. Parallel Comput. 89 (2019)
S. Mahdieh Ghazimirsaeed, Seyed Hessam Mirsadeghi, Ahmad Afsahi
An Efficient Collaborative Communication Mechanism for MPI Neighborhood Collectives. IPDPS (2019)
S. Mahdieh Ghazimirsaeed, Ryan E. Grant, Ahmad Afsahi
A Dedicated Message Matching Mechanism for Collective Communications. ICPP Workshops (2018)
Matthew G. F. Dosanjh, S. Mahdieh Ghazimirsaeed, Ryan E. Grant, Whit Schonbein, Michael J. Levenhagen, Patrick G. Bridges, Ahmad Afsahi
The Case for Semi-Permanent Cache Occupancy: Understanding the Impact of Data Locality on Network Processing. ICPP (2018)
Iman Faraji, Ahmad Afsahi
Design considerations for GPU-aware collective communications in MPI. Concurr. Comput. Pract. Exp. 30 (17) (2018)
Iman Faraji, Seyed Hessam Mirsadeghi, Ahmad Afsahi
Exploiting heterogeneity of communication channels for efficient GPU selection on multi-GPU nodes. Parallel Comput. 68 (2017)
Seyed Hessam Mirsadeghi, Jesper Larsson Träff, Pavan Balaji, Ahmad Afsahi
Exploiting Common Neighborhoods to Optimize MPI Neighborhood Collectives. HiPC (2017)
Iman Faraji, Seyed Hessam Mirsadeghi, Ahmad Afsahi
Topology-Aware GPU Selection on Multi-GPU Nodes. IPDPS Workshops (2016)
Seyed Hessam Mirsadeghi, Ahmad Afsahi
Topology-Aware Rank Reordering for MPI Collectives. IPDPS Workshops (2016)
Seyed Hessam Mirsadeghi, Iman Faraji, Ahmad Afsahi
MAGC: A Mapping Approach for GPU Clusters. SBAC-PAD (2016)
Seyed Hessam Mirsadeghi, Ahmad Afsahi
PTRAM: A Parallel Topology-and Routing-Aware Mapping Framework for Large-Scale HPC Systems. IPDPS Workshops (2016)
Iman Faraji, Ahmad Afsahi
Hyper-Q aware intranode MPI collectives on the GPU. ESPM@SC (2015)
Ryan E. Grant, Mohammad J. Rashti, Pavan Balaji, Ahmad Afsahi
Scalable connectionless RDMA over unreliable datagrams. Parallel Comput. 48 (2015)
Iman Faraji, Ahmad Afsahi
GPU-Aware Intranode MPI_Allreduce. EuroMPI/ASIA (2014)
Judicael A. Zounmevo, Dries Kimpe, Robert B. Ross, Ahmad Afsahi
Extreme-scale computing services over MPI: Experiences, observations and features proposal for next-generation message passing interface. Int. J. High Perform. Comput. Appl. 28 (4) (2014)
Judicael A. Zounmevo, Ahmad Afsahi
Intra-Epoch Message Scheduling To Exploit Unused or Residual Overlapping Potential. EuroMPI/ASIA (2014)
Judicael A. Zounmevo, Xin Zhao, Pavan Balaji, William Gropp, Ahmad Afsahi
Nonblocking Epochs in MPI One-Sided Communication. SC (2014)
Judicael A. Zounmevo, Ahmad Afsahi
A fast and resource-conscious MPI message queue mechanism for large-scale jobs. Future Gener. Comput. Syst. 30 (2014)
Judicael A. Zounmevo, Dries Kimpe, Robert B. Ross, Ahmad Afsahi
Using MPI in high-performance computing services. EuroMPI (2013)
Xin Zhao, Darius Buntinas, Judicael A. Zounmevo, James Dinan, David Goodell, Pavan Balaji, Rajeev Thakur, Ahmad Afsahi, William Gropp
Toward Asynchronous and MPI-Interoperable Active Messages. CCGRID (2013)
Jérome Soumagne, Dries Kimpe, Judicael A. Zounmevo, Mohamad Chaarawi, Quincey Koziol, Ahmad Afsahi, Robert B. Ross
Mercury: Enabling remote procedure call for high-performance computing. CLUSTER (2013)
Reza Zamani, Ahmad Afsahi
A study of hardware performance monitoring counter selection in power modeling of computing systems. IGCC (2012)
Judicael A. Zounmevo, Ahmad Afsahi
An Efficient MPI Message Queue Mechanism for Large-scale Jobs. ICPADS (2012)
Grigori Inozemtsev, Ahmad Afsahi
Designing an Offloaded Nonblocking MPI_Allgather Collective Using CORE-Direct. CLUSTER (2012)
Mohammad J. Rashti, Ahmad Afsahi
Exploiting application buffer reuse to improve MPI small message transfer protocols over RDMA-enabled networks. Clust. Comput. 14 (4) (2011)
Mohammad J. Rashti, Jonathan Green, Pavan Balaji, Ahmad Afsahi, William Gropp
Multi-core and Network Aware MPI Topology Functions. EuroMPI (2011)
Ying Qian, Ahmad Afsahi
Process Arrival Pattern Aware Alltoall and Allgather on InfiniBand Clusters. Int. J. Parallel Program. 39 (4) (2011)
Ryan E. Grant, Mohammad J. Rashti, Ahmad Afsahi, Pavan Balaji
RDMA Capable iWARP over Datagrams. IPDPS (2011)
Judicael A. Zounmevo, Ahmad Afsahi
Investigating Scenario-Conscious Asynchronous Rendezvous over RDMA. CLUSTER (2011)
Ryan E. Grant, Pavan Balaji, Ahmad Afsahi
A study of hardware assisted IP over InfiniBand and its impact on enterprise data center performance. ISPASS (2010)
Reza Zamani, Ahmad Afsahi
Adaptive estimation and prediction of power and performance in high performance computing. Comput. Sci. Res. Dev. 25 (3-4) (2010)
Mohammad J. Rashti, Ryan E. Grant, Ahmad Afsahi, Pavan Balaji
iWARP redefined: Scalable connectionless communication over high-speed Ethernet. HiPC (2010)
Mohammad J. Rashti, Ahmad Afsahi
Improving RDMA-based MPI eager protocol for frequently-used buffers. IPDPS (2009)
Ryan E. Grant, Ahmad Afsahi
Improving energy efficiency of asymmetric chip multithreaded multiprocessors through reduced OS noise scheduling. Concurr. Comput. Pract. Exp. 21 (18) (2009)
Ryan E. Grant, Ahmad Afsahi, Pavan Balaji
Evaluation of ConnectX Virtual Protocol Interconnect for Data Centers. ICPADS (2009)
Mohammad J. Rashti, Ahmad Afsahi
A Speculative and Adaptive MPI Rendezvous Protocol Over RDMA-enabled Interconnects. Int. J. Parallel Program. 37 (2) (2009)
Ying Qian, Ahmad Afsahi
Process Arrival Pattern and Shared Memory Aware Alltoall on InfiniBand. PVM/MPI (2009)
Mohammad J. Rashti, Ahmad Afsahi
Improving Communication Progress and Overlap in MPI Rendezvous Protocol over RDMA-enabled Interconnects. HPCS (2008)
Ying Qian, Ahmad Afsahi
SMP clusters. Clust. Comput. 11 (4) (2008)
Ryan E. Grant, Mohammad J. Rashti, Ahmad Afsahi
An Analysis of QoS Provisioning for Sockets Direct Protocol vs. IPoIB over Modern InfiniBand Networks. ICPP Workshops (2008)
Ryan E. Grant, Ahmad Afsahi
A Comprehensive Analysis of OpenMP Applications on Dual-Core Intel Xeon SMPs. IPDPS (2007)
Mohammad J. Rashti, Ahmad Afsahi
10-Gigabit iWARP Ethernet: Comparative Performance Analysis with InfiniBand and Myrinet-10G. IPDPS (2007)
Ying Qian, Ahmad Afsahi
High Performance RDMA-based Multi-port All-gather on Multi-rail QsNet II. HPCS (2007)
Reza Zamani, Ahmad Afsahi, Ying Qian, V. Carl Hamacher
A feasibility analysis of power-awareness and energy minimization in modern interconnects for high-performance computing. CLUSTER (2007)
Mohammad J. Rashti, Ahmad Afsahi
Assessing the Ability of Computation/Communication Overlap and Communication Progress in Modern Interconnects. Hot Interconnects (2007)
Ying Qian, Ahmad Afsahi
RDMA-based and SMP-aware Multi-port All-Gather on Multi-rail QsNet^II SMP Clusters. ICPP (2007)
Ryan E. Grant, Ahmad Afsahi
Improving system efficiency through scheduling and power management. CLUSTER (2007)
Ryan E. Grant, Ahmad Afsahi
Power-performance efficiency of asymmetric multiprocessors for multi-threaded scientific applications. IPDPS (2006)
Ying Qian, Ahmad Afsahi, Nathan R. Fredrickson, Reza Zamani
Performance evaluation of the Sun Fire Link SMP clusters. Int. J. High Perform. Comput. Netw. 4 (5/6) (2006)
Ying Qian, Ahmad Afsahi
clusters. IPDPS (2006)
Reza Zamani, Ahmad Afsahi
Communication Characteristics of Message-Passing Scientific and Engineering Applications. IASTED PDCS (2005)
Ying Qian, Ahmad Afsahi, Reza Zamani
Myrinet Networks: A Performance Study. NCA (2004)
Ying Qian, Ahmad Afsahi, Nathan R. Fredrickson, Reza Zamani
Performance Evaluation of the Sun Fire Link SMP Clusters. HPCS (2004)
Nathan R. Fredrickson, Ahmad Afsahi, Ying Qian
Performance characteristics of openMP constructs, and application benchmarks on a large symmetric multiprocessor. ICS (2003)
Ahmad Afsahi, Nikitas J. Dimopoulos
Architectural Extensions to Support Efficient Communication Using Message Prediction. HPCS (2002)
Ahmad Afsahi, Nikitas J. Dimopoulos
Analysis of a Latency Hiding Broadcasting Algorithm on a Reconfigurable Optical Interconnect. Parallel Process. Lett. 12 (1) (2002)
Ahmad Afsahi, Nikitas J. Dimopoulos
Efficient communication using message prediction for clusters of multiprocessors. Concurr. Comput. Pract. Exp. 14 (10) (2002)
Ahmad Afsahi, Nikitas J. Dimopoulos
Efficient Communication Using Message Prediction for Cluster Multiprocessors. CANPC (2000)
Ahmad Afsahi, Nikitas J. Dimopoulos
Hiding Communication Latency in Reconfigurable Message-Passing Environments. IPPS/SPDP (1999)
Ahmad Afsahi, Nikitas J. Dimopoulos
Communications Latency Hiding Techniques for a Reconfigurable Optical Interconnect: Benchmark Studies. PARA (1998)
Ahmad Afsahi, Nikitas J. Dimopoulos
Collective Communications on a Reconfigurable Optical Interconnect. OPODIS (1997)