SSL tracing.g
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SCSCP_TRACE_FILE := "/dev/null";
SCSCP_TRACE_MACHINE_NUMBER := "0";
SCSCP_TRACE_PROCESS_ID := 0;
SCSCP_TRACE_THREAD_ID := 0;
SCSCP_RESTORE_INFO_LEVEL := 0;
BindGlobal( "SCSCPTraceStartTracing",
function()
local t;
t := IO_gettimeofday();
PrintTo( SCSCP_TRACE_FILE, Concatenation(
"\"Start Tracing\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 137, ",
SCSCP_TRACE_MACHINE_NUMBER, "};;\n" ) );
end);
BindGlobal( "SCSCPTraceEndTracing",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"End Tracing\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 145, ",
SCSCP_TRACE_MACHINE_NUMBER, "};;\n" ) );
end);
BindGlobal( "SCSCPTraceNewProcess",
function()
local t;
t := IO_gettimeofday();
SCSCP_TRACE_PROCESS_ID:=SCSCP_TRACE_PROCESS_ID+1;
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"New Process\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 153, ",
SCSCP_TRACE_MACHINE_NUMBER,
",",
String(SCSCP_TRACE_PROCESS_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceEndProcess",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"End Process\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 161, ",
SCSCP_TRACE_MACHINE_NUMBER,
",",
String(SCSCP_TRACE_PROCESS_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceNewThread",
function()
local t;
t := IO_gettimeofday();
SCSCP_TRACE_THREAD_ID:=SCSCP_TRACE_THREAD_ID+1;
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"New Thread\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 169, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), ",0};;\n" ) ); # Last zero is "Outport ID"
end);
BindGlobal( "SCSCPTraceEndThread",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"End Thread\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 177, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceRunThread",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Run Thread\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 185, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceSuspendThread",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Suspend Thread\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 193, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceBlockThread",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Block Thread\"{[2]{0,0},",
String(t.tv_sec),
".", String(t.tv_usec),
", 201, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), ",0,0};;\n" ) );
# last two zeroes are "Inport ID" and "Block Reason"
end);
BindGlobal( "SCSCPTraceDeblockThread",
function()
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Deblock Thread\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 209, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), ",",
String(SCSCP_TRACE_THREAD_ID), "};;\n" ) );
end);
BindGlobal( "SCSCPTraceSendMessage",
function( recipient )
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Send Message\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 217, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), # "Sending Process ID"
",0,", # "Sending Channel" ("Outport ID")
String( recipient ), # "Receiving Processor Number"
",1,0,0};;\n" ) ); # 1,0,0 for "Receiving Process ID",
# "Receiving Channel" ("Inport ID")
# and "Tag of the message"
end);
BindGlobal( "SCSCPTraceReceiveMessage",
function( sender )
local t;
t := IO_gettimeofday();
AppendTo( SCSCP_TRACE_FILE, Concatenation(
"\"Receive Message\"{[2]{0,0},",
String(t.tv_sec),
".",
String(t.tv_usec),
", 225, ",
SCSCP_TRACE_MACHINE_NUMBER, ",",
String(SCSCP_TRACE_PROCESS_ID), # "Receiving Process ID"
",0,", # "Receiving Channel" ("Inport ID")
String( sender ), # "Sending Processor ID"
",1,0,0,0};;\n" ) ); # 1,0,0,0 for "Sending Process ID",
# "Sending Channel" ("Outport ID"),
# "Tag of the message" and
# "Size of message in words"
end);
BindGlobal( "SCSCPLogTracesTo",
function( arg )
if Length(arg)=0 then
SCSCPTraceEndThread();
SCSCPTraceEndProcess();
SCSCPTraceEndTracing();
IN_SCSCP_TRACING_MODE:=false;
SetInfoLevel( InfoSCSCP, SCSCP_RESTORE_INFO_LEVEL );
elif Length(arg)=1 and IsString(arg[1]) then
SCSCP_RESTORE_INFO_LEVEL := InfoLevel( InfoSCSCP );
SetInfoLevel(InfoSCSCP,0);
IN_SCSCP_TRACING_MODE := true;
if SCSCPserverMode then
SCSCP_TRACE_FILE := Concatenation( arg[1], ".tr" );
else
SCSCP_TRACE_FILE := Concatenation( arg[1], ".client.tr" );
fi;
SCSCP_TRACE_PROCESS_ID:=0;
SCSCP_TRACE_THREAD_ID:=0;
if SCSCPserverMode then
SCSCP_TRACE_MACHINE_NUMBER := String( SCSCPserverPort ); # for the server
else
SCSCP_TRACE_MACHINE_NUMBER := "0"; # for the client
fi;
SCSCPTraceStartTracing();
SCSCPTraceNewProcess();
SCSCPTraceNewThread();
SCSCPTraceRunThread();
else
Error("SCSCPLogTracesTo : the number of arguments must be 0 or 1");
fi;
end);
###########################################################################
##
#F SCSCPLogTracesToGlobal
##
## <#GAPDoc Label="SCSCPLogTracesToGlobal">
##
## <ManSection>
## <Func Name="SCSCPLogTracesToGlobal" Arg="testname"/>
## <Func Name="SCSCPLogTracesToGlobal" Arg="" Label="to stop tracing"/>
## <Description>
## To analyse the performance of parallel &SCSCP; framework, we make
## use of the &EdenTV; program <Cite Key="EdenTV" /> developed initially
## to visualize the performance of parallel programs written in functional
## programming language Eden, and now distributed under the
## GNU Public License and available from
## <URL>http://www.mathematik.uni-marburg.de/~eden/?content=EdenTV</URL>.
## <P/>
## Called with the string containing the name of the test, this functions
## turns on writing information about key activity events into trace files in
## current directories for the client and servers listed <Ref
## Var="SCSCPservers" />. The trace file will have the name of the format
## <A>testname</A><C>.client.tr</C> for the client and
## <A>testname</A><C>.<hostname>.<port>.tr</C> for the server. After the
## test these files should be collected from remote servers and concatenated
## (e.g. using <File>cat</File>) together with the standard preamble from the
## file <File>scscp/tracing/stdhead.txt</File> (we recommend to put after the
## preamble first all traces from servers and then the client's traces to have
## nicer diagrams). The resulting file then may be opened with &EdenTV;.
## <P/>
## In the following example we use a dual core MacBook laptop to generate trace
## files for two tests and then show their corresponding trace diagrams:
## <Log>
## <![CDATA[
## SCSCPLogTracesToGlobal("quillen100");
## ParListWithSCSCP( List( [1..100], i->[512,i]), "QuillenSeriesByIdGroup" );
## SCSCPLogTracesToGlobal();
## SCSCPLogTracesToGlobal( "euler" );
## ParListWithSCSCP( [1..1000], "WS_Phi" );
## SCSCPLogTracesToGlobal();
## ]]>
## </Log>
## <Alt Only="LaTeX">\centerline{\resizebox{150mm}{!}{\includegraphics{img/quillen.pdf}}}</Alt>
## <Alt Only="HTML"><img src="img/quillen.jpg" align="left" /></Alt>
## <Alt Only="LaTeX">\vspace{10pt}\centerline{\resizebox{150mm}{!}{\includegraphics{img/euler.pdf}}}</Alt>
## <Alt Only="HTML"><img src="img/euler.jpg" align="left" /></Alt>
## <Alt Only="Text">/See diagrams in HTML and PDF versions of the manual/</Alt>
## The diagrams (made on an dual core MacBook laptop), shows that in the first
## case parallelising is efficient and master successfully distributes load to
## workers, while in the second case a single computation is just too short,
## so most of the time is spent on communication. To parallelize the Euler's
## function example efficiently, tasks must rather be grouped in chunks, which
## should be enough large to reduce the communication overload, but enough
## small to ensure that tasks are evenly distributed.
## <P/>
## Of course, tracing can be used to investigate communication between a client
## and a single server in a non-parallel context as well. For this purpose,
## <Ref Var="SCSCPservers" /> must be modified to contain only one server.
## </Description>
## </ManSection>
## <#/GAPDoc>
##
BindGlobal( "SCSCPLogTracesToGlobal",
function( arg )
local server, testname;
if Length(arg)=0 then
SCSCPLogTracesTo();
for server in SCSCPservers do
EvaluateBySCSCP( "SCSCPStopTracing",[ ], server[1], server[2] );
od;
elif Length(arg)=1 and IsString(arg[1]) then
testname := arg[1];
for server in SCSCPservers do
EvaluateBySCSCP("SCSCPStartTracing",[ testname ], server[1], server[2] );
od;
SCSCPLogTracesTo( testname );
else
Error("SCSCPLogTracesTo : the number of arguments must be 0 or 1");
fi;
end);
#############################################################################
#
# procedures to start/stop tracing
#
BindGlobal( "SCSCPStartTracing",
function( testname )
SCSCPLogTracesTo(
Concatenation( testname, ".",
SCSCPserverAddress, ".",
String( SCSCPserverPort ) ) );
return true;
end);
BindGlobal( "SCSCPStopTracing",
function()
SCSCPLogTracesTo();
return true;
end);
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2026-03-28
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