Karan Pathak
Il - He/him
Nationality: Indian
Expertise
System Architect 2023 - (Ex-IMEC)
- Performance estimation and Analysis.
- CPU Micro-architecture (BP, TLB Pref., Cache Pref., etc.)
- Full System Simulation (gem5, QEMU)
- BSP, BIOS, System Firmwares
- Programming Models for LLMs for CXL-CPU-GPU systems (HPC+AI)
- FPGA Prototyping (CHISEL to Bitstream), OS support, FS over Network, DMA in FPGAs
Current Work
- CXLRAMSim v1.0 : Supporting CXL devices in Full System Simulator.
- CXLRAMSim v2.0: Extensions for CXL switch in FS Simulator
- CXL-PNM: Exploring new programming models for CXL-PNM using CXLRAMSim
- CXL Memory Analytical Modeling based on real hardware (CXL cards) characterization
- Micro-architectural Innovations for Mitigating CXL latency.
Education
Masters
| Embedded Systems2023 – 2023 TU Delft
Bachelors
| ECE2016 – 2016 NIT Hamirpur
Professionals experiences
System Architect
Creating Validated simulation infrastructure for performance estimation of RISC-V architectures.
Enabling Full-System simulation and emulation capabilities with Linux and Zephyr RTOS
FPGA based prototyping of Heterogenous Compute Systems involving accelerators and multi-core systems.
Creating RISC-V debugging infrastructure for high-end FPGAs with HBMs.
Memory backend simulators to study different technologies and their impact on ML workloads.
Charactersation of Chip-level Interconnect protocol on FPGA.
Baremetal Firmware development (bootloaders, Hardware Performance Counters) for emulated and simulated systems.
Enabling Full-System simulation and emulation capabilities with Linux and Zephyr RTOS
FPGA based prototyping of Heterogenous Compute Systems involving accelerators and multi-core systems.
Creating RISC-V debugging infrastructure for high-end FPGAs with HBMs.
Memory backend simulators to study different technologies and their impact on ML workloads.
Charactersation of Chip-level Interconnect protocol on FPGA.
Baremetal Firmware development (bootloaders, Hardware Performance Counters) for emulated and simulated systems.
Awards
Justus van Effen Fellowship
TU Delft
2022
Erasmus Mundus Fellowship
EU
2021
EIT Digital Masters Fellowship
EU
2021
Summa Cum Laude
TU Delft
2023
Silver Medal
NIT Hamirpur
2016
Merit Fellowship SJVNL
SJVNL
2012
Selected publications
Towards Accurate RISC-V Full System Simulation via Component-Level Calibration
Karan Pathak
Published in ACM Transactions on Embedded Systems in 2025
CXLRAMSim v1.0: System-Level Exploration of CXL Memory Expander Cards
Karan Pathak
Published in ArXiv in 2026
Research
Current Research Fields
Micro-architecture
Architectural Simulators
CXL Memory Pooling
CXL Switch
Accelerating Simulation/Checkpointing
Architectural Simulators
CXL Memory Pooling
CXL Switch
Accelerating Simulation/Checkpointing