Virender Kumar Email & Phone Number

San Francisco Bay Area

New HPC System designing, development, and Operation- Installation/Deployment/maintenance/troubleshooting of the new & existing HPC hardware (CPU/GPU) system and software- Installation/Deployment/maintenance/troubleshooting the GPFS/Spectrum Scale, ZFS,- Installation/Deployment/maintenance/troubleshooting of the Backup and Archive solution- Installation/Deployment/maintenance/troubleshooting the Network (Ethernet& InfiniBand)- Installation/Deployment/maintenance/troubleshooting the Virtualization/ DevOPs/Hyperscale- Installation/Deployment/maintenance/troubleshooting the HPC security tool like Crowd-Strike, Rapid7 Carbon- black & Wazuh etc- Installation/Deployment/maintenance/troubleshooting: - Globus, SAMBA, CIFS, NFS, Ganesha- Installation/Deployment/maintenance/troubleshooting XCAT/Confluent, Slurm, Check-MK, ThinLinc, 2FA Duo Factor authentication, Various Kind of License servers, Git,System Firewalld, Gpfs Snapshot policy, etc- Upgrade the HPC system firmware (Switch, Hardware), OS patch, Security Patch, etc- Creating scripts for automating daily routine tasks & health checks by using ansible- Coordinating & following different vendors during Hardware issues, deployment of the new HPC system Hardware, Software, and infrastructure-related issue resolution- Verify the vendor Benchmarking submitted results on different architectures like INTEL, AMD, (GROMACS, LAMMPS, QE MgO, QE Ice, HipMCL, HPCG, HPCC, IMB)- Providing day to day technical support to the users’- Maintaining/Writing/Update all system-related issues and operational documents on Github.- Manage different vendor’s HPC servers (IBM/DELL/Lenovo/NVIDIA/DDN/SM, GPUs)

Houston, Texas, Us

Responsibilities: -- Manage team responsible for providing on-site hardware, systems, sub-systems, and/or other applications support for customers according to contractual service levels.- Plan, direct, and monitor operational/tactical activities of the team.- Meet business and operation targets.- Recruit and support the development of direct staff members.- Handle customer escalations.- Establish relationships with customers and other functional managers.- Provide guidance on process improvements and recommend changes in alignment with- Provide coaching and leadership to assigned field technicians.

Houston, Texas, Us

CRAY XC40 HPC System: -CRAY XC40 2.8 P/F HPC: - CRAY XC40 HPC (Intel Xeon Broadwell E5-2695 V4 18C 2.1GHz with 128GB), connected through Cray Aries Dragonfly topology, Total Peak performances 2.8 P/F with 290 TiB memory, home 6.3 PB & 670 TB scratch storage & TFinity SPECTRA Logic Library (19 PB capacity with LTO 7)Total 2320 compute nodes (83520 cores)Responsibility: -- Managing & monitoring on-site installation, service & repair of Cray XC40 Cluster machine components Providing 24*7 Maintenance support of 2.8 petaflop HPC machine.- HPC Site Team lead of 2.8 P/F machine- Maintaining Site SLA & providing 24*7 support- Update the system firmware to the latest version (O.S, storage, switches & library, etc)- A part of the team member during the commissioning & installation of the Indian Biggest HPC Project- Managing the Datacenter infrastructure - Lead the localization during UAT & NOA- Managing user account and quota policy, production jobs & PBS queue as per client requirement.- Customize the Node image through BCM (Bright Cluster Manager)- Backup & migration of production data through TAS VSM using spectra Tfinity library- Involved in day-to-day maintenance & client requirement activity- Installation/management of tools like Matlab, CDT, IDL, SVN, FlexNet, etc.- Support weather forecasting models like UM, WRF, NCUM, and GFS- System configuration and management through Automation tools like Ansible and Puppet- Documentation of every system administrator procedure- Coordinate with scientists to change and implement the new models in system- Follow-up with infrastructure vendors

Armonk, New York, Ny, Us

IBM IdataPlex 350 T/F HPC Cluster:-Bhaskara IBM iDataPlex DX360M4(Xeon E5-2670 8C 2.6 GHz, Infini- Band FDR 14) High-performance computing system 350TF with 67 TB aggregate distributed shared Memory with 3 PB of Storage (India’s most powerful supercomputer in 2015). Total 1052 Computes nodes (16832 cores).Responsibility:- Implementation and maintenance of 350T/F machine.- Installation and Managing General Parallel File System Cluster (GPFS).- Installation and configuration of Job Scheduler-IBM LSF.- Installation and configuration of Platform Application Central for Monitoring and GUI job submission.- Installation and Up-gradation of Scientific Application & Libraries on RHEL Cluster.- Porting Regional and Atmospheric Models (UM, NGEFS, WRF) on RHELCluster.- Creating, Modifying, and distributing User ID across Computing nodes via XCAT.- Install, maintain and support hardware and software components of the HPC environment.- Provide immediate support in implementation, troubleshooting, and maintenance of the HPC system.- Installation and configuration of intel cluster studio, IBM POE & required Modules.- Manage and troubleshoot TSM & HSM servers and clients.- Install and troubleshoot Mellanox InfiniBand FDR 14, Cisco MDS9148 Fabric Switches.- Troubleshooting of TS3500 & Ts1060 Model Tape Drives & library.- Manage and troubleshoot XCAT, LSF, IDL, and MATLAB Server applications.- Experiences in installation & system performance checking through LINPAC, BLAS, HPL, Intel MKL Bench-marking Application.

Noida, Up, In

IBM P6-575 22T/F HPC System: -Environment: IBM P6-575 22TF HPC (Each Node with 32 cores of IBM P6 CPU 4.7 GHz with 32GB RAM), a Total of 42 Nodes connected through the InfiniBand network. Peak Speed ~ 22 TFs with ~500TB GPFS storage & IBM 3584 Tape library of 100TB capacity (LTO4)Responsibility: -- System hardware monitoring, support & repair of IBM P6 (P575) based HPC components and other IBM P-series servers (p560, p570) using Hardware Management Console (HMC).- Log’s collection, identification, Disk Management & replacements in IBM Storage DS4k.- IB cable errors, issue tracing, replacements & troubleshooting in InfiniBand Q-logic Switches.- Production Job Monitoring, Scheduling & configuration using IBM workload scheduler: LoadLeveler.- AIX v5 & v6 Operating System related issues identification & troubleshoot.- Support Weather Forecasting models like UM, WRF, NCUM & GFS.- Data Backup & Migration using IBM TSM (Tivoli Storage Manager) in LTO4 Tape drives.- Troubleshooting Network & Booting problems, Monitoring & performance optimization.- User creation & Modification with file system quota.- Generating Daily, weekly & monthly reports of System utilization using the NMON tool.