Decrease Stack Size

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Add Channel Estimation application and kernels
 - Update Bender to version 0.27.3
 - Update default Questasim version to 2022.3
+- Decrease stack size to 128 words
 
 ### Fixed
 - Fix type issue in `snitch_addr_demux`

config/config.mk

@@ -28,17 +28,20 @@ include $(MEMPOOL_DIR)/config/$(config).mk
 # Boot address (in dec)
 boot_addr ?= 2684354560 # A0000000
 
-# L2 memory configuration (in hex)
+# L2 memory configuration (in dec)
 l2_base  ?= 2147483648 # 80000000
 l2_size  ?= 4194304    # 400000
 l2_banks ?= 4
 
+# L1 size per bank (in dec)
+l1_bank_size ?= 1024
+
 # Size of sequential memory per core (in bytes)
 # (must be a power of two)
-seq_mem_size ?= 1024
+seq_mem_size ?= 512
 
 # Size of stack in sequential memory per core (in bytes)
-stack_size ?= 1024
+stack_size ?= 512
 
 #########################
 ##  AXI configuration  ##

config/systolic.mk

@@ -26,7 +26,7 @@ axi_masters_per_group ?= 1
 
 # Size of sequential memory per core (in bytes)
 # (must be a power of two)
-seq_mem_size ?= 2048
+seq_mem_size ?= 1024
 
 #############################
 ##  Xqueues configuration  ##

hardware/Makefile

@@ -89,6 +89,7 @@ vlog_args += -work $(library)
 # Defines
 vlog_defs += -DNUM_CORES=$(num_cores) -DNUM_CORES_PER_TILE=$(num_cores_per_tile) -DNUM_GROUPS=$(num_groups) -DBANKING_FACTOR=$(banking_factor)
 vlog_defs += -DL2_BASE=$(l2_base) -DL2_SIZE=$(l2_size) -DL2_BANKS=$(l2_banks)
+vlog_defs += -DL1_BANK_SIZE=$(l1_bank_size)
 vlog_defs += -DBOOT_ADDR=$(boot_addr) -DXPULPIMG=$(xpulpimg)
 vlog_defs += -DSNITCH_TRACE=$(snitch_trace)
 vlog_defs += -DAXI_DATA_WIDTH=$(axi_data_width)

hardware/src/mempool_pkg.sv

@@ -37,7 +37,7 @@ package mempool_pkg;
   localparam integer unsigned ByteOffset       = $clog2(BeWidth);
   localparam integer unsigned BankingFactor    = `ifdef BANKING_FACTOR `BANKING_FACTOR `else 0 `endif;
   localparam bit              LrScEnable       = 1'b1;
-  localparam integer unsigned TCDMSizePerBank  = 1024; // [B]
+  localparam integer unsigned TCDMSizePerBank  = `ifdef L1_BANK_SIZE `L1_BANK_SIZE `else 0 `endif;
   localparam integer unsigned NumBanks         = NumCores * BankingFactor;
   localparam integer unsigned NumBanksPerTile  = NumBanks / NumTiles;
   localparam integer unsigned NumBanksPerGroup = NumBanks / NumGroups;

software/runtime/arch.ld.c

@@ -5,7 +5,7 @@
 /* This file will get processed by the precompiler to expand all macros. */
 
 MEMORY {
-  l1 (R) : ORIGIN = 0x00000000, LENGTH = (NUM_CORES * 0x1000) /* NUM_CORES * 4 * 1KiB per bank */
+  l1 (R) : ORIGIN = 0x00000000, LENGTH = (NUM_CORES * BANKING_FACTOR * L1_BANK_SIZE)
   l2     : ORIGIN = L2_BASE   , LENGTH = L2_SIZE
   rom (R): ORIGIN = BOOT_ADDR , LENGTH = 0x00001000
 }

software/runtime/runtime.mk

@@ -72,6 +72,7 @@ DEFINES += -DNUM_CORES_PER_GROUP=$(shell awk 'BEGIN{print $(num_cores)/$(num_gro
 DEFINES += -DNUM_TILES_PER_GROUP=$(shell awk 'BEGIN{print ($(num_cores)/$(num_groups))/$(num_cores_per_tile)}')
 DEFINES += -DLOG2_NUM_CORES_PER_TILE=$(shell awk 'BEGIN{print log($(num_cores_per_tile))/log(2)}')
 DEFINES += -DBOOT_ADDR=$(boot_addr)
+DEFINES += -DL1_BANK_SIZE=$(l1_bank_size)
 DEFINES += -DL2_BASE=$(l2_base)
 DEFINES += -DL2_SIZE=$(l2_size)
 DEFINES += -DSEQ_MEM_SIZE=$(seq_mem_size)