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### High-Level Synthesis Tool: A Guide to GAUT Version 2.4.3 ####

Learn how to use GAUT, a high-level synthesis tool, to compile, synthesize, and verify digital systems. This guide provides step-by-step instructions on converting C code to VHD with GAUT version 2.4.3. The slides were created for educational purposes for the GAUT introduction class. GAUT offers functionalities such as C-to-CDFG conversion, CDFG-to-VHD synthesis, setting cadences, and viewing CDFGs. Try GAUT for efficient digital system development! ####

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### High-Level Synthesis Tool: A Guide to GAUT Version 2.4.3 ####

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  1. Synthesis and Verificationof Digital Systems By Daniel Gomez-Prado Feb 2013 The slides were prepared for a class introduction to GAUT version 2.4.3, a high-level synthesis tool developed at http://hls-labsticc.univ-ubs.fr/

  2. GAUT’s main window Exit This Window

  3. GAUT’s main window Compiler (C to CDFG) Synthesis (CDFG to VHD)

  4. C to CDFG

  5. C to CDFG

  6. C to CDFG

  7. C to CDFG Compile C into CDFG

  8. C to CDFG View CDFG

  9. C to CDFG

  10. C to CDFG

  11. GAUT’s main window Compiler (C to CDFG) Synthesis (CDFG to VHD)

  12. CDFG to VHD

  13. CDFG to VHD

  14. CDFG to VHD Set the desired Cadency(must be multiple of clock) Start with no-pipelining Synthesize

  15. CDFG to VHD VHD generated

  16. CDFG to VHD FF 208 MUX 256 Registers and Muxes

  17. ./vhd2dot.pl volterra.vhd ---------- mux table add0[a] (2) = reg_21 reg_19 add0[b] (8) = reg_21 reg_20 reg_19 reg_43 reg_37 reg_18 reg_25 reg_31 bus_1 (3) = reg_21 reg_17 reg_22 bus_2 (2) = reg_20 reg_18 bus_3 (1) = reg_19 mul2[a] (5) = reg_14 reg_15 reg_20 reg_0 reg_31 mul2[b] (7) = reg_2 reg_15 reg_17 reg_22 reg_16 reg_13 reg_7 mul3[a] (7) = reg_6 reg_17 reg_16 reg_22 reg_18 reg_4 reg_25 mul3[b] (7) = reg_14 reg_8 reg_1 reg_15 reg_20 reg_16 reg_11 mul4[a] (6) = reg_14 reg_22 reg_19 reg_16 reg_10 reg_25 mul4[b] (3) = reg_14 reg_15 reg_12 mul5[a] (7) = reg_14 reg_17 reg_19 reg_5 reg_16 reg_3 reg_18 mul5[b] (4) = reg_20 reg_22 reg_16 reg_9 reg_14 (1) = bus_3 reg_15 (1) = bus_2 reg_16 (1) = bus_1 reg_17 (1) = mul5[o] reg_18 (1) = mul4[o] reg_19 (2) = mul3[o] reg_18 reg_20 (2) = reg_19 mul2[o] reg_21 (1) = add0[o] reg_22 (2) = mul4[o] reg_20 reg_25 (1) = mul5[o] reg_31 (1) = mul2[o] reg_37 (1) = mul4[o] reg_43 (1) = mul5[o] ---------- total muxes 5

  18. CDFG to VHD FF 208 MUX 1024 Registers and Muxes

  19. ./vhd2dot.pl volterra.vhd ---------- mux table add0[a] (8) = reg_14 reg_24 reg_19 reg_25 reg_21 reg_22 reg_18 add0[b] (9) = reg_24 reg_20 reg_15 reg_21 reg_17 reg_22 reg_26 mul2[a] (6) = reg_14 reg_15 reg_20 reg_0 reg_18 reg_25 mul2[b] (7) = reg_2 reg_15 reg_17 reg_19 reg_16 reg_13 reg_7 mul3[a] (7) = reg_6 reg_17 reg_16 reg_19 reg_18 reg_4 reg_23 mul3[b] (7) = reg_14 reg_8 reg_1 reg_15 reg_20 reg_16 reg_11 mul4[a] (7) = reg_24 reg_14 reg_21 reg_19 reg_16 reg_10 reg_18 mul5[a] (7) = reg_14 reg_21 reg_17 reg_22 reg_5 reg_16 reg_3 reg_18 (5) = mul5[o] add0[o] mul4[o] mul2[o] mul3[o] reg_21 (5) = add0[o] mul5[o] mul3[o] mul2[o] reg_19 reg_22 (4) = mul5[o] mul4[o] add0[o] reg_18 mul5[b] (4) = reg_20 reg_19 reg_16 reg_9 mul4[b] (3) = reg_14 reg_15 reg_12 reg_19 (3) = mul4[o] add0[o] mul3[o] reg_14 (3) = add0[o] mul2[o] bus_3 reg_15 (2) = add0[o] bus_2 reg_16 (2) = mul4[o] bus_1 reg_17 (2) = mul5[o] mul2[o] reg_20 (2) = reg_20 mul2[o] reg_18 reg_23 bus_1 (3) = reg_14 reg_20 reg_18 bus_2 (3) = reg_14 reg_21 reg_16 bus_3 (1) = reg_22 reg_23 (3) = mul5[o] add0[o] mul3[o] reg_24 (3) = add0[o] mul4[o] mul5[o] reg_25 (2) = add0[o] mul2[o] reg_26 (1) = mul2[o] reg_23 ---------- total muxes 83

  20. CDFG to VHD Cannot synthesize with new cadence

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