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Analyze SBID stalls on sync instructions and stalls of other types (#177)
* Add -l/--list option to list the devices, metrics and kernels in the input data file * Add -l/--list option to list the devices, metrics and kernels in the input data file * Add -l/--list option to list the devices, metrics and kernels in the input data file * Add -l/--list option to list the devices, metrics and kernels in the input data file * Analyze SBID stalls * Draw line chart if there are at least 2 data points, bar chart otherwise * Analyze sync instructions * Analyze stalls of other types
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‎tools/unitrace/scripts/analyzeperfmetrics.py‎

Lines changed: 97 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -113,7 +113,7 @@ def FindBB(bbs, ins): # find BB of an instruction
113113

114114
return None, None # never reaches here
115115

116-
def AnalyzeSbidStalls(kernel, args, df, report):
116+
def AnalyzeStalls(kernel, args, stalldf, report):
117117
shaders = os.listdir(args.shaderdump)
118118
files = [] # .asm files
119119

@@ -172,9 +172,6 @@ def AnalyzeSbidStalls(kernel, args, df, report):
172172

173173
asm = asm + ".ip"
174174

175-
df = df[["IP[Address]", "SbidStall[Events]"]]
176-
df = df[df["SbidStall[Events]"] > 0] # drop 0s
177-
df = df.sort_values(by = ["SbidStall[Events]"], ascending = False)
178175
source_available = False
179176
instructions = []
180177
with open(asm, "r") as inf:
@@ -189,9 +186,14 @@ def AnalyzeSbidStalls(kernel, args, df, report):
189186

190187
bbs = ConstructCFG(instructions)
191188

189+
df = stalldf[["IP[Address]", "SbidStall[Events]"]]
190+
df = df[df["SbidStall[Events]"] > 0] # drop 0s
191+
df = df.sort_values(by = ["SbidStall[Events]"], ascending = False)
192+
192193
print("Kernel: " + kernel, file = report)
193194
print("Assembly with instruction addresses: " + asm, file = report)
194-
print("SBID stalls: ", file = report)
195+
print("***********************************************************************************************", file = report)
196+
print("Sbid Stalls: ", file = report)
195197

196198
for index, row in df.iterrows():
197199
ip = row["IP[Address]"]
@@ -200,15 +202,24 @@ def AnalyzeSbidStalls(kernel, args, df, report):
200202
if ((ins.startswith("//") == False) and ("//" in ins)):
201203
if (ins.startswith("/* [" + str('{:08X}'.format(pc))+ "] */ ") == True): # found stalled instruction
202204
words = ins.split("{")
203-
if (len(words) < 2):
204-
break # invalid
205-
206205
sbids_stalled = []
207-
for token in words[1].split("}")[0].split(","):
208-
if (token.startswith("$") == True):
209-
subtokens = token.split(".")
210-
if (len(subtokens) > 1):
211-
sbids_stalled.append(subtokens[0])
206+
if (len(words) >= 2):
207+
for token in words[1].split("}")[0].split(","):
208+
if (token.startswith("$") == True):
209+
sbids_stalled.append(token)
210+
if (len(sbids_stalled) == 0):
211+
words = ins.split("(") # check if SBID tokens are in (...)
212+
if (len(words) >= 2):
213+
i = 1
214+
done = False
215+
while (done == False):
216+
for token in words[i].split(")")[0].split(","):
217+
if (token.startswith("$") == True):
218+
sbids_stalled.append(token)
219+
done = True
220+
i = i + 1
221+
if (i == len(words)): # all words are inspected
222+
break
212223

213224
ins_stalled_not_line_resolved = addr
214225
ins_stalled_not_file_resolved = addr
@@ -229,18 +240,26 @@ def AnalyzeSbidStalls(kernel, args, df, report):
229240
bid, start, end = bbs_to_check[j]
230241
for addr2, ins2 in enumerate(reversed(instructions[start : end + 1])):
231242
if (len(sbids_stalled) > 0):
232-
if ((ins2.startswith("//") == False) and ("//" in ins2)):
243+
if ((ins2.startswith("//") == False) and ("//" in ins2) and (re.match("/\* *\[", ins2) is not None)):
233244
tokens = ins2.split("{")
234245
if (len(tokens) > 1):
235-
sbids = []
246+
sbids_stall = []
236247
for token in tokens[1].split("}")[0].split(","):
237248
if (token.startswith("$") == True):
238-
sbids.append(token)
249+
sbids_stall.append(token)
239250
for sbid in sbids_stalled:
240-
if (sbid in sbids): # instruction stalled depends on ins2
241-
sbids_stalled.remove(sbid) # remove sbid from the sbids of the instruction stalled
242-
ins_stall_not_line_resolved.append(end - addr2) # source lines/files to be resolved
243-
ins_stall_not_file_resolved.append(end - addr2)
251+
for sbid2 in sbids_stall:
252+
if (len(sbid.split(".")) > 1): # .dst or .src in bid
253+
if (sbid2 == sbid.split(".")[0]):
254+
sbids_stalled.remove(sbid) # remove sbid from the sbids of the instruction stalled
255+
ins_stall_not_line_resolved.append(end - addr2) # source lines/files to be resolved
256+
ins_stall_not_file_resolved.append(end - addr2)
257+
else:
258+
if (sbid == sbid2.split(".")[0]): # stalled ins depends on ins2 or dependency already resolved
259+
sbids_stalled.remove(sbid) # remove sbid from the sbids of the instruction stalled
260+
if ((sbid == sbid2) and ("sync." not in ins2)): # ins2 not a sync. ins depends on ins2
261+
ins_stall_not_line_resolved.append(end - addr2) # source lines/files to be resolved
262+
ins_stall_not_file_resolved.append(end - addr2)
244263

245264
if (re.match("// *Line", ins2) is not None):
246265
if (ins_stalled_not_line_resolved != None): # source line of stalled instruction
@@ -300,6 +319,58 @@ def AnalyzeSbidStalls(kernel, args, df, report):
300319
print("is stalled", file = report)
301320

302321
break
322+
323+
324+
# analyze stalls of other types
325+
326+
type = ["ControlStall[Events]", "PipeStall[Events]", "SendStall[Events]", "DistStall[Events]", "SyncStall[Events]", "InstrFetchStall[Events]", "OtherStall[Events]"]
327+
for t in type:
328+
df = stalldf[["IP[Address]", t]]
329+
df = df[df[t] > 0] # drop 0s
330+
if (df.shape[0] == 0): # zero stalls. move to the next type
331+
continue
332+
df = df.sort_values(by = [t], ascending = False)
333+
334+
print("***********************************************************************************************", file = report)
335+
print(t.split("Stall")[0] + " Stalls: ", file = report)
336+
337+
for index, row in df.iterrows():
338+
ip = row["IP[Address]"]
339+
pc = int(ip, 16)
340+
for addr, ins in enumerate(instructions):
341+
if ((ins.startswith("//") == False) and ("//" in ins)):
342+
if (ins.startswith("/* [" + str('{:08X}'.format(pc))+ "] */ ") == True): # found stalled instruction
343+
if (source_available == True):
344+
ins_stalled_not_line_resolved = addr
345+
ins_stalled_not_file_resolved = addr
346+
source_line_stalled = None
347+
source_file_stalled = None
348+
349+
for addr2, ins2 in enumerate(reversed(instructions[0: addr])):
350+
if (re.match("// *Line", ins2) is not None):
351+
if (ins_stalled_not_line_resolved != None): # source line of stalled instruction
352+
source_line_stalled = addr - 1 - addr2
353+
ins_stalled_not_line_resolved = None
354+
355+
if (re.match("// *File", ins2) is not None):
356+
if (ins_stalled_not_file_resolved != None): # source file of stalled instruction
357+
source_file_stalled = addr - 1 - addr2
358+
ins_stalled_not_file_resolved = None
359+
360+
if ((ins_stalled_not_line_resolved == None) and (ins_stalled_not_file_resolved == None)):
361+
break # we are done
362+
363+
print("\nInstruction", file = report)
364+
print(" " + ins, file = report)
365+
if (source_line_stalled != None):
366+
print(" " + instructions[source_line_stalled][3:], file = report)
367+
if (source_file_stalled != None):
368+
print(" " + instructions[source_file_stalled][3:], file = report)
369+
370+
print("is stalled", file = report)
371+
372+
break
373+
303374
print("===============================================================================================", file = report)
304375

305376
def AnalyzeStallMetrics(args, header, last):
@@ -357,7 +428,7 @@ def AnalyzeStallMetrics(args, header, last):
357428
plt.close(fig) # close figure to save memory
358429

359430
if (args.shaderdump is not None):
360-
AnalyzeSbidStalls(kernel, args, df2, report_out)
431+
AnalyzeStalls(kernel, args, df2, report_out)
361432

362433
print("\nAnalyzed kernel " + kernel)
363434

@@ -396,7 +467,7 @@ def AnalyzeStallMetrics(args, header, last):
396467
plt.close(fig) # close figure to save memory
397468

398469
if (args.shaderdump is not None):
399-
AnalyzeSbidStalls(kernel, args, df2, report_out)
470+
AnalyzeStalls(kernel, args, df2, report_out)
400471

401472
print("\nAnalyzed kernel " + kernel)
402473
if (p != None):
@@ -405,7 +476,7 @@ def AnalyzeStallMetrics(args, header, last):
405476

406477
if ((args.shaderdump is not None) and (args.report is not None)):
407478
report_out.close()
408-
print("SBID stall report is in file " + args.report)
479+
print("Stall report is in file " + args.report)
409480

410481
else:
411482
counting = True
@@ -455,12 +526,12 @@ def AnalyzeStallMetrics(args, header, last):
455526
plt.savefig(args.output)
456527

457528
if (args.shaderdump is not None):
458-
AnalyzeSbidStalls(kernel, args, df2, report_out)
529+
AnalyzeStalls(kernel, args, df2, report_out)
459530

460531
print("\nStall metric chart in file " + args.output + " has been successfully generated.")
461532
if ((args.shaderdump is not None) and (args.report is not None)):
462533
report_out.close()
463-
print("SBID stall report is in file " + args.report)
534+
print("Stall report is in file " + args.report)
464535

465536
def PlotKernelInstancePerfMetrics(args, kernel, df, metrics):
466537
k = 0
@@ -536,7 +607,7 @@ def AnalyzePerfMetrics(args, header, last):
536607
ax = df3.plot(y = metrics_cleansed, kind = 'line', xlabel = args.xlabel, ylabel = args.ylabel)
537608
else:
538609
ax = df3.plot(y = metrics_cleansed, kind = 'bar', xlabel = args.xlabel, ylabel = args.ylabel)
539-
610+
540611
plt.grid(visible = True, which = 'both', axis = 'y')
541612
plt.legend(loc = 'best', fontsize = 4)
542613
plt.title(label = args.title + "\n(" + kernel + ")", loc = 'center', fontsize = 8, wrap = True)

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