# qwen4exp-swift15-w4dn8-i8-hc8m.recipe -- the Swift 1.5 finetune of Qwen3.8-Flash-Next # (ukisai/Swift1.5-Qwen3.8-Flash-Next, BF16, 335.3 GiB, key set identical to the official base) as # a radiance container for frank-primary: every routed expert's DOWN projection at block-fp8 -- # the same tile form the served FP8-native container already holds (E4M3 codes, one bf16 scale a # 128x128 block, the minicpm5-2b amax/448 rule) -- and its gate_up at four bits, the served recipe's # w4nl64a8h encoding. The rest is qwen4exp-w5dn64-i8-hc8m.recipe verbatim: int8 trunk linears, # block-fp8 hc mixers and MTP fc, the fixed-scale n-gram table, the 2-bit draft head. # # Down first because down is the larger share of an expert's output error (held-out relative error # 0.094 against gate_up's 0.064 on the base model), and fp8 buys it a full binade for 2x the bytes # of w4 -- while gate_up, three quarters of the expert's weights, stays at 4 bits. Expert mass: # gate_up 150.00 GiB -> ~37.6 GiB, down 75.00 GiB -> ~37.7 GiB: ~75 GiB of experts, ~38 GiB a rank # at TP=2, inside the 40960 MiB host pool. The published w5dn64 comparison (mean KL 0.0789 -> # 0.0717, top-1 92.85% -> 93.34%, decode +4%, prefill -19%) is the 5-bit upper bound; this tier # trades part of that quality back for prefill. # # CALIB=DIR rad-convert \ # --recipe scripts/recipes/qwen4exp-swift15-w4dn8-i8-hc8m.recipe -o qwen4exp-swift15-w4dn8-i8-hc8m.rad # # DIR is the calibration directory the bf16 container wrote (RADIANCE_CALIB_DIR, 10M tokens of # traffic-shaped corpus). Everything not named here is served as the checkpoint holds it (bf16: # embeddings, the vision tower, the QSA indexer); the first rule that matches a weight decides it. # The bf16 container is NOT passed with --reuse: the peak-disk arithmetic does not fit (checkpoint + # container + container + output > purge-freed space), and --reuse only saves a re-read. # The protected experts, cast to bf16 ahead of both expert rules. THE NAMES BELOW ARE THE BASE # CHECKPOINT'S (from its 1M-token recording, qwen4exp-w5dn64-i8-hc8m.recipe) -- a warm start only. # The Swift 1.5 finetune's routing distribution is not assumed equal: the derivation step rewrites # this section from Swift's OWN calibration recording before this recipe is ever run, by the base's # law -- an expert whose share of its layer's down-input energy is at least 3% and at least three # times its share of the routing, an even count on each rank's half of the layer (the four-bit GEMM # takes the rest as two equal tables by parity) by adding that half's next most energetic expert. blk.34.ffn_*_exps.407.weight cast dtype=bf16 blk.34.ffn_*_exps.496.weight cast dtype=bf16 blk.44.ffn_*_exps.292.weight cast dtype=bf16 blk.44.ffn_*_exps.350.weight cast dtype=bf16 blk.46.ffn_*_exps.290.weight cast dtype=bf16 blk.46.ffn_*_exps.392.weight cast dtype=bf16 blk.47.ffn_*_exps.122.weight cast dtype=bf16 blk.47.ffn_*_exps.143.weight cast dtype=bf16 blk.47.ffn_*_exps.399.weight cast dtype=bf16 blk.47.ffn_*_exps.445.weight cast dtype=bf16 # Every other routed expert, trunk and MTP layer alike: the down projection as E4M3 codes with a # bf16 scale a 128x128 block -- one amax per block, scale = amax/448 rounded to bf16, the exact # tile form modelopt ships and the served FP8-native container holds, so the moe_gemm_fp8a8 kernel # reads it unrep permuted; and the gate_up as u4 codes into the w4nl table, rotated by the 128-wide # Hadamard, an E4M3 scale a group of 64 under the fixed 2^-13 searched for least error as stored, # chosen by GPTQ against $CALIB and swept three times by coordinate descent. The down shapes tile # exactly: [2560, 640] -> 20x5 blocks, [1280, 2560] -> 10x20. The MTP layer has no recording, so # its down is rounded to nearest anyway and its gate_up quantises uncalibrated -- both said on # stderr, as the base recipe says. blk.*.ffn_down_exps.*.weight rtn codes=fp8_e4m3 block=128x128 scale=bf16 blk.*.ffn_*_exps.*.weight gptq table=w4nl group=64 scale=fp8_e4m3 scale2=f32 block2=*x* scale2_value=0.0001220703125 transform=fwht128 rule=search cd=3 calib=$CALIB # Every connection's two mixing matrices -- the 96 trunk connections, the final mixer and the MTP # head's three -- as E4M3 rows with an f32 scale a group of each row. A 128x128 block cannot cover # them: lowrank is 320, 2.5 blocks. Down is [320, 10240] and takes a scale every 128 columns; up is # [10240, 320] and takes four scales a row, 80 columns each. *_hc_down.weight rtn codes=fp8_e4m3 group=128 scale=f32 *_hc_up.weight rtn codes=fp8_e4m3 group=80 scale=f32 # The MTP head's fc_hidden and fc_embedding, the same rows. They only ever change the drafts. mtp.fc_hidden.weight rtn codes=fp8_e4m3 group=128 scale=f32 mtp.fc_embedding.weight rtn codes=fp8_e4m3 group=128 scale=f32 # The trunk's block linears as int8, a scale per 128 columns of a row searched for least error. # The QSA indexer's projection is not one of them: its top-k is a hard choice between blocks, and # keeping it as the checkpoint holds it costs 20 MB. blk.*.attn_qg.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.attn_k.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.attn_v.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.attn_output.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.ssm_inz.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.ssm_out.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.ffn_gate_up_shexp.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search blk.*.ffn_down_shexp.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search # The lm_head, int8 with a bf16 scale a row per 128 columns (logits_gemm_i8): at E4M3 it costs # ~0.6 points of top-1 on its own. output.weight rtn codes=i8 group=128 scale=bf16 clamp=sym rule=search # The n-gram table at one fixed E4M3 scale; qwen4exp-w4.recipe says where the value comes from. # The value sits on a three-octave plateau (2^-13..2^-10, rel_l2 0.02662) with 1.7x headroom over # the base table's absmax; the prep phase verifies Swift's PLE absmax lands inside the plateau # before this rule is trusted. blk.*.ple_ngram.weight rtn codes=fp8_e4m3 block=*x* scale=bf16 rule=fixed scale_value=1.99317932128906e-4 # The MTP head's 2-bit draft head. INERT for this checkpoint: the HF weight map has no # mtp.draft_head.weight (same as the base), kept for shape parity with the family. mtp.draft_head.weight rtn codes=u2 zero=u8 group=128 scale=f16