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JaishyamReddivari/README.md

Jaishyam Reddy Reddivari

Design Verification Engineer | MS Computer Engineering, Syracuse University

Design Verification engineer building production-style UVM environments from scratch and driving them to coverage closure. Most recent work: a full UVM environment for an 8×8 INT8 systolic-array ML accelerator, taken to 100% functional coverage on the open-source Verilator toolchain. Across five independent projects I've built constrained-random testbenches, reference-model scoreboards, SVA assertion suites, functional-coverage models, and Python multi-seed regression infrastructure, debugging 50+ RTL and testbench defects through waveform root-cause analysis.


Featured Projects

8×8 INT8 Systolic-Array Accelerator — UVM Verification — Full UVM verification of a weight-stationary INT8 matrix-multiply accelerator (the compute core of ML accelerators), closed on an open-source Verilator + UVM flow. Constrained-random AXI4-Stream/AXI4-Lite stimulus, a self-checking scoreboard cross-validated against three independent reference models (NumPy, cycle-accurate, C++), and a hand-built functional-coverage model. 100% functional coverage, 97.1% line coverage, 0 failures across 500 regression runs.

AXI4 Slave UVM Verification — Black-box verification of AXI4 slave RAM against ARM AMBA spec. Byte-addressable associative-array scoreboard, 14 SVA assertions, 22 directed + constrained-random tests. 97.5% functional coverage, 0 mismatches.

RISC-V 5-Stage Pipelined Processor — Designed RV32I core with forwarding and hazard detection, then verified it with a full UVM environment: dual agents, ISA reference-model scoreboard, pipeline monitors. 28 SVA assertions, 19 covergroups, coverage driven from 52% → 96%. Found a register-file bypass bug causing stale reads.

Asynchronous CDC FIFO — 16-deep async FIFO with Gray-coded pointers, dual-clock domains, and 2-FF synchronizers. UVM environment with dual-clock monitors and FIFO-queue reference scoreboard. 500-transaction regression at asymmetric clock ratios, 0 mismatches.

UART 16550 Controller — PC16550D-compliant RTL (TX/RX state machines, programmable baud generator, FIFO buffering) verified with a full UVM environment: serial loopback, dual-path monitors, and a mailbox scoreboard over 500 constrained-random frames. Adds a UVM RAL model with dual address maps for DLAB aliasing, a custom adapter/predictor, and read-back verification. 0 errors across 500 frames; 17 RTL and 16 testbench/RAL bugs resolved.


Technical Skills

SystemVerilog · UVM 1.2 · SVA · Verilog · Python · C++ · Shell/Bash AXI4 · AHB · APB · Wishbone · UART · SPI · I2C Questa/ModelSim · Riviera-PRO · Verilator · Vivado · MATLAB


Contact

LinkedIn Email

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  1. systolic_array_dv systolic_array_dv Public

    UVM verification of an 8×8 INT8 weight-stationary systolic-array ML accelerator — closed to 100% functional coverage on an open-source Verilator + UVM toolchain.

    SystemVerilog

  2. AXI_RAM_Verification AXI_RAM_Verification Public

    UVM black-box verification of AXI4 slave RAM — ARM AMBA spec, 97.5% functional coverage

    SystemVerilog

  3. CDC_FIFO CDC_FIFO Public

    Async CDC FIFO with Gray-coded pointers + UVM dual-clock verification environment

    SystemVerilog

  4. RISC-V-Design-UVM-Verification RISC-V-Design-UVM-Verification Public

    RV32I 5-stage pipelined core + full UVM environment — 28 SVA assertions, 19 covergroups, 96% functional coverage, ISA reference-model scoreboard

    SystemVerilog 1

  5. UART-16550-Controller UART-16550-Controller Public

    UART 16550 RTL design (PC16550D spec) + UVM verification — 17 RTL bugs found, 500-frame loopback validation.

    SystemVerilog